Replace Github runners that were deprecated/removed

Author: KevinBoyette

.github/workflows/ci.yml

@@ -10,14 +10,14 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        os: [ubuntu-20.04, macos-11]
+        os: [ubuntu-latest, macos-latest]
         java: [ '17' ]
     runs-on: ${{ matrix.os }}
     steps:
     - name: Checkout current branch (full)
-      uses: actions/checkout@v3
+      uses: actions/checkout@v4
     - name: Setup Java
-      uses: actions/setup-java@v3
+      uses: actions/setup-java@v4
       with:
           distribution: 'adopt'
           java-version: ${{ matrix.java }}