chore(deps): update actions/cache action to v4 (#602)

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

Author: renovate[bot]

.github/workflows/pr-checks.yml

@@ -34,7 +34,7 @@ jobs:
           echo "$(go env GOPATH)/bin" >> $GITHUB_PATH
 
       - name: Module cache
-        uses: actions/cache@v3
+        uses: actions/cache@v4
         env:
           cache-name: go-mod-cache
         with:
@@ -114,7 +114,7 @@ jobs:
 
       - name: Cache build tools
         id: cache-build-tools
-        uses: actions/cache@v3
+        uses: actions/cache@v4
         with:
           path: ./bin
           key: build-tools-${{ github.ref_name }}

.github/workflows/validate-crd-docs.yml

@@ -16,7 +16,7 @@ jobs:
 
       - name: Cache build tools
         id: cache-build-tools
-        uses: actions/cache@v3
+        uses: actions/cache@v4
         with:
           path: ./bin
           key: build-tools-${{ github.ref_name }}