ci: cache: fix semver tag

Author: elopez

.github/workflows/markdown.yml

@@ -13,7 +13,7 @@ jobs:
     steps:
     - uses: actions/checkout@8e8c483db84b4bee98b60c0593521ed34d9990e8 # v6.0.1
     - name: Restore lychee cache
-      uses: actions/cache@9255dc7a253b0ccc959486e2bca901246202afeb # v4
+      uses: actions/cache@9255dc7a253b0ccc959486e2bca901246202afeb # v5.0.1
       with:
          path: .lycheecache
          key: cache-lychee-${{ github.sha }}