chore: Update actions/cache action to v4.2.1

Author: grafanarenovatebot[bot]

.github/actions/go-cache-restore/action.yml

@@ -26,7 +26,7 @@ runs:
 
     - name: Restore Go cache
       id: restore-go-cache
-      uses: actions/cache/restore@1bd1e32a3bdc45362d1e726936510720a7c30a57 # v4.2.0
+      uses: actions/cache/restore@0c907a75c2c80ebcb7f088228285e798b750cf8f # v4.2.1
       with:
         key: go-cache-${{ steps.compute-cache-info.outputs.key }}
         path: ${{ steps.compute-cache-info.outputs.path }}

.github/actions/go-cache-save/action.yml

@@ -11,7 +11,7 @@ runs:
   using: "composite"
   steps:
     - name: Save Go cache
-      uses: actions/cache/save@1bd1e32a3bdc45362d1e726936510720a7c30a57 # v4.2.0
+      uses: actions/cache/save@0c907a75c2c80ebcb7f088228285e798b750cf8f # v4.2.1
       with:
         key: ${{ inputs.key }}
         path: ${{ inputs.path }}