chore(deps): update actions/cache action to v4 (#246)

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

Author: renovate[bot]

.github/workflows/pr-checks.yml

@@ -23,7 +23,7 @@ jobs:
           echo "GOPATH=$(go env GOPATH)" >> $GITHUB_ENV
           echo "$(go env GOPATH)/bin" >> $GITHUB_PATH
       - name: Module cache
-        uses: actions/cache@v3
+        uses: actions/cache@v4
         env:
           cache-name: go-mod-cache
         with:
@@ -49,7 +49,7 @@ jobs:
           echo "GOPATH=$(go env GOPATH)" >> $GITHUB_ENV
           echo "$(go env GOPATH)/bin" >> $GITHUB_PATH
       - name: Module cache
-        uses: actions/cache@v3
+        uses: actions/cache@v4
         env:
           cache-name: go-mod-cache
         with: