Update actions/cache to v4

Author: Eeems

action.yml

@@ -22,7 +22,7 @@ runs:
         aptHash(){ echo "$1-$(apt-cache policy "$1" | grep -oP '(?<=Candidate:\s)(.+)')"; }
         echo "packagesHash=$(echo "${{ inputs.packages }}" | xargs -rn1 | tr '\n' '-'  | md5sum | cut -f 1 -d ' ')" >> $GITHUB_ENV
     - name: Cache deb files
-      uses: actions/cache@v3
+      uses: actions/cache@v4
       with:
         path: .aptcache
         key: apt-cache-${{ env.packagesHash }}