Fix getting cache dir on windows

Signed-off-by: Sebastian Malton <sebastian@malton.name>

.github/workflows/test.yml

@@ -34,6 +34,7 @@ jobs:
 
       - name: Get yarn cache directory path
         id: yarn-cache-dir-path
+        shell: bash
         run: echo "dir=$(yarn cache dir)" >> $GITHUB_OUTPUT
 
       - uses: actions/cache@v3