Update actions/cache digest to 6849a64

Signed-off-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

.github/workflows/java-ci.yml

@@ -11,7 +11,7 @@ jobs:
     steps:
       - uses: actions/checkout@eef61447b9ff4aafe5dcd4e0bbf5d482be7e7871 # v4
       - name: Cache local Maven repository
-        uses: actions/cache@3624ceb22c1c5a301c8db4169662070a689d9ea8 # v4
+        uses: actions/cache@6849a6489940f00c2f30c0fb92c6274307ccb58a # v4
         with:
           path: ~/.m2/repository
           key: ${{ runner.os }}-maven-${{ hashFiles('**/pom.xml') }}