Update CI/CD

Author: JerrySievert

.github/workflows/build_and_test.yml

@@ -7,14 +7,7 @@ jobs:
     strategy:
       matrix:
         os: [ubuntu-latest]
-        version:
-          [
-            REL_14_STABLE,
-            REL_15_STABLE,
-            REL_16_STABLE,
-            REL_17_STABLE,
-            REL_18_BETA3
-          ]
+        version: [REL_16_STABLE, REL_17_STABLE, REL_18_STABLE]
     runs-on: ${{ matrix.os }}
 
     steps:
@@ -43,7 +36,7 @@ jobs:
           popd
 
       - name: Checkout pljs extension code
-        uses: actions/checkout@v4
+        uses: actions/checkout@v5
         with:
           path: pljs