chore(deps): update actions/cache digest to 7921ae2

Author: renovate[bot]

.github/workflows/merge.yml

@@ -31,7 +31,7 @@ jobs:
         server-password: ${{ secrets.OSSRH_PASSWORD }}
 
     - name: Cache local Maven repository
-      uses: actions/cache@9fa7e61ec7e1f44ac75218e7aaea81da8856fd11
+      uses: actions/cache@7921ae235bdcb376cc8f22558dc5f8ddc3c3c2f9
       with:
         path: ~/.m2/repository
         key: ${{ runner.os }}-17-maven-${{ hashFiles('**/pom.xml') }}

.github/workflows/pullrequest.yml

@@ -34,7 +34,7 @@ jobs:
           languages: java
 
       - name: Cache local Maven repository
-        uses: actions/cache@9fa7e61ec7e1f44ac75218e7aaea81da8856fd11
+        uses: actions/cache@7921ae235bdcb376cc8f22558dc5f8ddc3c3c2f9
         with:
             path: ~/.m2/repository
             key: ${{ runner.os }}${{ matrix.build.java }}-maven-${{ hashFiles('**/pom.xml') }}