SUPP0RT-596: Added GitHub Actions

Author: rimi-itk

.github/workflows/pr.yaml

@@ -6,7 +6,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        php-versions: [ '7.4', '8.0', '8.1' ]
+        php-versions: [ '7.4' ]
         dependency-version: [ prefer-lowest, prefer-stable ]
     steps:
       - uses: actions/checkout@master
@@ -38,7 +38,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        php-versions: [ '7.4', '8.0', '8.1' ]
+        php-versions: [ '7.4' ]
         dependency-version: [ prefer-lowest, prefer-stable ]
     steps:
       - uses: actions/checkout@master