ci(local-action): fix invalid tsconfig paths in tests with mocked process.cwd()

Author: matejchalk

.github/actions/code-pushup/action.yml

@@ -17,6 +17,6 @@ runs:
       run: npx tsx .github/actions/code-pushup/src/runner.ts
       shell: bash
       env:
-        TSX_TSCONFIG_PATH: .github/actions/code-pushup/tsconfig.json
+        TSX_TSCONFIG_PATH: ${{ github.workspace }}/.github/actions/code-pushup/tsconfig.json
         GH_TOKEN: ${{ inputs.token }}
         MODE: ${{ inputs.mode }}