Update basic.yml

Author: lemire

.github/workflows/basic.yml

@@ -8,11 +8,11 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        java: [ 11, 16 ]
+        java: [ 17, 21 ]
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v4.1.1
       - name: Set up JDK
-        uses: actions/setup-java@v2.5.0
+        uses: actions/setup-java@v4.1.0
         with:
           java-version: ${{ matrix.java }}
           distribution: 'adopt'
@@ -21,4 +21,4 @@ jobs:
       - name: Build example
         run: javac -cp target/classes/:. example.java
       - name: Run example
-        run: java -cp target/classes/:. example
+        run: java -cp target/classes/:. example