feat(deps): bump actions/cache from 3.3.0 to 4.1.2

Bumps [actions/cache](https://github.com/actions/cache) from 3.3.0 to 4.1.2.
- [Release notes](https://github.com/actions/cache/releases)
- [Changelog](https://github.com/actions/cache/blob/main/RELEASES.md)
- [Commits](actions/cache@v3.3.0...v4.1.2)

---
updated-dependencies:
- dependency-name: actions/cache
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <support@github.com>

.github/workflows/pr.yaml

@@ -26,7 +26,7 @@ jobs:
     - name: save docker image for cache
       run: mkdir -p image/ && docker save -o image/image.tar image:${{ steps.vars.outputs.alpine_version }}
     - name: cache docker image
-      uses: actions/cache@v3.3.0
+      uses: actions/cache@v4.1.2
       with:
         path: image/
         key: ${{ runner.os }}-docker-${{ github.sha }}
@@ -41,14 +41,14 @@ jobs:
       id: vars
       run: echo ::set-output name=alpine_version::$(grep '^FROM alpine' Dockerfile  | cut -d ' ' -f 2 | cut -d ':' -f 2)
     - name: load cached docker image
-      uses: actions/cache@v3.3.0
+      uses: actions/cache@v4.1.2
       with:
         path: image/
         key: ${{ runner.os }}-docker-${{ github.sha }}
     - name: load cached docker container
       run: docker load -i image/image.tar
     - name: cached scan db
-      uses: actions/cache@v3.3.0
+      uses: actions/cache@v4.1.2
       with:
         path: vulndb/
         key: trivy-vulndb