Downgrade mac tests to macos-11 due to DNS issues

This is likely the culprit for the sccache issues we were seeing on macos.  See actions/runner-images#8649 for more information on the bug affecting macos-12 and macos-13

PiperOrigin-RevId: 598476243

.github/workflows/test_cpp.yml

@@ -317,18 +317,18 @@ jobs:
       matrix:
         include:
           - name: MacOS Bazel
-            os: macos-12
-            cache_key: macos-12
+            os: macos-11
+            cache_key: macos-111
             bazel: test //src/... //third_party/utf8_range/...
           # TODO Enable these once mac setup is working for Bazel 7
           #- name: MacOS Bazel 7
-          #  os: macos-12
-          #  cache_key: macos-12-bazel7
+          #  os: macos-11
+          #  cache_key: macos-11-bazel7
           #  bazel: test //src/... //third_party/utf8_range/...
           #  bazel_version: '7.0.0'
           - name: MacOS Apple Silicon (build only) Bazel
-            os: macos-12
-            cache_key: macos-12-arm
+            os: macos-11
+            cache_key: macos-11-arm
             # Current github runners are all Intel based, so just build/compile
             # for Apple Silicon to detect issues there.
             bazel: build --cpu=darwin_arm64 //src/... //third_party/utf8_range/...
@@ -361,11 +361,10 @@ jobs:
       fail-fast: false   # Don't cancel all jobs if one fails.
       matrix:
         include:
-          # TODO: investigate and fix
-          # - name: MacOS CMake
-          #   os: macos-12
-          #   flags: -DCMAKE_CXX_STANDARD=14
-          #   cache-prefix: macos-cmake
+          - name: MacOS CMake
+            os: macos-11
+            flags: -DCMAKE_CXX_STANDARD=14
+            cache-prefix: macos-11-cmake
           - name: Windows CMake
             os: windows-2022
             flags: >-

.github/workflows/test_objectivec.yml

@@ -29,7 +29,7 @@ jobs:
           xc_project: "ProtocolBuffers_iOS.xcodeproj"
 
     name: Xcode ${{ matrix.platform}} ${{ matrix.xc_config }}
-    runs-on: macos-12
+    runs-on: macos-11
     env:
       DEVELOPER_DIR: /Applications/Xcode_14.1.app/Contents/Developer
     steps:
@@ -72,7 +72,7 @@ jobs:
         PLATFORM: ["ios", "macos", "tvos"]
         CONFIGURATION: ["Debug", "Release"]
     name: CocoaPods ${{ matrix.PLATFORM}} ${{ matrix.CONFIGURATION}}
-    runs-on: macos-12
+    runs-on: macos-11
     env:
       DEVELOPER_DIR: /Applications/Xcode_14.1.app/Contents/Developer
     steps:
@@ -115,7 +115,7 @@ jobs:
         - platform: "macOS"
           bazel_targets: //objectivec/...
     name: Bazel ${{ matrix.platform }} ${{ matrix.config.name }}
-    runs-on: macos-12
+    runs-on: macos-11
     steps:
       - name: Checkout pending changes
         uses: protocolbuffers/protobuf-ci/checkout@v2

.github/workflows/test_php.yml

@@ -153,7 +153,7 @@ jobs:
         version: ['8.2']
 
     name: MacOS PHP ${{ matrix.version }}
-    runs-on: macos-12
+    runs-on: macos-11
     steps:
       - name: Checkout pending changes
         uses: protocolbuffers/protobuf-ci/checkout@v2

.github/workflows/test_python.yml

@@ -65,7 +65,7 @@ jobs:
             flags: --define=use_fast_cpp_protos=true
 
     name: MacOS ${{ matrix.type }} ${{ matrix.version }}
-    runs-on: macos-12
+    runs-on: macos-11
     steps:
       - name: Checkout pending changes
         uses: protocolbuffers/protobuf-ci/checkout@v2

.github/workflows/test_ruby.yml

@@ -129,7 +129,7 @@ jobs:
         #- { version: "3.3", ffi: FFI }
 
     name: MacOS Ruby ${{ matrix.version }}${{ matrix.ffi == 'FFI' && ' FFI' || '' }}
-    runs-on: macos-12
+    runs-on: macos-11
     steps:
       - name: Checkout pending changes
         uses: protocolbuffers/protobuf-ci/checkout@v2

.github/workflows/test_upb.yml

@@ -92,7 +92,7 @@ jobs:
           - { name: "macOS", bazel-command: "test" }
           - { name: "macOS ARM (build only)", bazel-command: "build", flags: "--cpu=darwin_arm64" }
     name: ${{ matrix.config.name }}
-    runs-on: macos-12
+    runs-on: macos-11
     steps:
       - name: Checkout pending changes
         uses: protocolbuffers/protobuf-ci/checkout@v2
@@ -106,7 +106,7 @@ jobs:
         uses: protocolbuffers/protobuf-ci/bazel@v2
         with:
           credentials: ${{ secrets.GAR_SERVICE_ACCOUNT }}
-          bazel-cache: "upb-bazel-macos"
+          bazel-cache: "upb-bazel-macos-11"
           bazel: ${{ matrix.config.bazel-command }} --cxxopt=-std=c++17 --host_cxxopt=-std=c++17 ${{ matrix.config.flags }} //bazel/... //benchmarks/... //lua/... //protos/... //protos_generator/... //python/... //upb/... //upb_generator/...
           version: 6.3.0
 
@@ -174,11 +174,11 @@ jobs:
           - { os: ubuntu-latest, python-version: "3.8", architecture: x64, type: 'binary' }
           - { os: macos-11, python-version: "3.8", architecture: x64, type: 'binary' }
           - { os: ubuntu-latest, python-version: "3.12", architecture: x64, type: 'binary' }
-          - { os: macos-12, python-version: "3.12", architecture: x64, type: 'binary' }
+          - { os: macos-11, python-version: "3.12", architecture: x64, type: 'binary' }
           - { os: ubuntu-latest, python-version: "3.8", architecture: x64, type: 'source' }
           - { os: macos-11, python-version: "3.8", architecture: x64, type: 'source' }
           - { os: ubuntu-latest, python-version: "3.12", architecture: x64, type: 'source' }
-          - { os: macos-12, python-version: "3.12", architecture: x64, type: 'source' }
+          - { os: macos-11, python-version: "3.12", architecture: x64, type: 'source' }
 
           # Windows uses the full API up until Python 3.10.
           - { os: windows-2019, python-version: "3.8", architecture: x86, type: 'binary' }