Upgrade actions/cache@v3

Author: hlecorche

.github/workflows/tests.yml

@@ -103,7 +103,7 @@ jobs:
                 run: echo "::set-output name=dir::$(yarn cache dir)"
 
             -   name: Cache dependencies
-                uses: actions/cache@v2
+                uses: actions/cache@v3
                 with:
                     path: |
                         ${{ steps.composer-cache.outputs.dir }}