Upgrade actions/cache to v3 in build workflow

Updated cache action to version 3

Author: karianna

.github/workflows/build.yml

@@ -21,7 +21,7 @@ jobs:
       with:
         java-version: ${{ matrix.jdk }}
     - name: Cache Maven packages
-      uses: actions/cache@v2
+      uses: actions/cache@v3
       with:
         path: ~/.m2
         key: ${{ runner.os }}-m2-${{ hashFiles('**/pom.xml') }}