Update mamezou-tech/setup-helmfile action to v2

Author: renovate[bot]

action.yml

@@ -96,7 +96,7 @@ runs:
         force: true
 
     - name: Setup helmfile
-      uses: mamezou-tech/setup-helmfile@v1.2.0
+      uses: mamezou-tech/setup-helmfile@v2.0.0
       if: ${{ inputs.operation == 'deploy' }}
       with:
         helmfile-version: v0.148.1