jdk 8

Author: yegor256

.github/workflows/mvn.yml

@@ -13,7 +13,7 @@ jobs:
     strategy:
       matrix:
         os: [ubuntu-20.04, windows-2022, macos-12]
-        java: [11, 17]
+        java: [8, 11, 17]
     steps:
       - uses: actions/checkout@v3
       - uses: actions/setup-java@v3