Add write permissions to assign.yaml

Signed-off-by: Pedro Kaj Kjellerup Nacht <pnacht@google.com>

.github/workflows/apidiff.yaml

@@ -1,6 +1,6 @@
 name: Run apidiff
 
-on: [pull_request]
+on: [ pull_request ]
 
 permissions:
   contents: read

.github/workflows/assign.yaml

@@ -12,6 +12,9 @@ permissions:
 jobs:
   assign:
     runs-on: ubuntu-latest
+    permissions:
+      issues: write
+      pull-requests: write
     steps:
       - uses: actions/github-script@v6
         with:

.github/workflows/lint.yaml

@@ -1,6 +1,6 @@
 name: Run lint
 
-on: [push, pull_request]
+on: [ push, pull_request ]
 
 permissions:
   contents: read

.github/workflows/tests.yaml

@@ -1,6 +1,6 @@
 name: Run tests
 
-on: [push, pull_request]
+on: [ push, pull_request ]
 
 permissions:
   contents: read
@@ -9,17 +9,17 @@ jobs:
   test:
     strategy:
       matrix:
-        version: ["1.15", "1.16", "1.17", "1.18"]
-        platform: [ubuntu-latest, macos-latest, windows-latest]
+        version: [ '1.15', '1.16', '1.17', '1.18' ]
+        platform: [ ubuntu-latest, macos-latest, windows-latest ]
     runs-on: ${{ matrix.platform }}
     steps:
-      - name: Install Go
-        uses: actions/setup-go@v2
-        with:
-          go-version: ${{ matrix.version }}
-      - name: Checkout code
-        uses: actions/checkout@v2
-      - name: Build
-        run: go build -v ./...
-      - name: Test
-        run: go test -v -race ./...
+    - name: Install Go
+      uses: actions/setup-go@v2
+      with:
+        go-version: ${{ matrix.version }}
+    - name: Checkout code
+      uses: actions/checkout@v2
+    - name: Build
+      run: go build -v ./...
+    - name: Test
+      run: go test -v -race ./...