build(deps): update actions/cache action to v6

Author: renovate[bot]

.github/actions/setup-tests/action.yml

@@ -16,7 +16,7 @@ runs:
       with:
         fail-mode: false
     - name: Use Maven dependency cache
-      uses: actions/cache@27d5ce7f107fe9357f9df03efb73ab90386fccae # v5.0.5
+      uses: actions/cache@2c8a9bd7457de244a408f35966fab2fb45fda9c8 # v6.0.0
       with:
         path: ~/.m2/repository
         # We use a unique key and restore from the base one, to ensure that

.github/workflows/sbom.yml

@@ -34,7 +34,7 @@ jobs:
         run: echo "date=$(/bin/date -u "+%Y%m%d")" >> $GITHUB_OUTPUT
         shell: bash
       - name: Use Maven dependency cache
-        uses: actions/cache@27d5ce7f107fe9357f9df03efb73ab90386fccae # v5.0.5
+        uses: actions/cache@2c8a9bd7457de244a408f35966fab2fb45fda9c8 # v6.0.0
         with:
           path: ~/.m2/repository
           key: ${{ runner.os }}-${{ steps.get-date.outputs.date }}-${{ hashFiles('**/pom.xml') }}