Update github/gh-aw action to v0.68.3

Author: renovate[bot]

.github/workflows/copilot-setup-steps.yml

@@ -21,6 +21,6 @@ jobs:
       - name: Checkout repository
         uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
       - name: Install gh-aw extension
-        uses: github/gh-aw/actions/setup-cli@13ac7dee59ec5127393ec22dc3f4d0f6987a3842 # v0.67.1
+        uses: github/gh-aw/actions/setup-cli@ce1794953e0ec42adc41b6fca05e02ab49ee21c3 # v0.68.3
         with:
           version: v0.49.3