Update Go version to 1.25 for consistency with other workflows

Co-authored-by: lpcox <15877973+lpcox@users.noreply.github.com>

Author: Copilot

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

@@ -27,7 +27,7 @@ jobs:
       - name: Setup Go
         uses: actions/setup-go@41dfa10bad2bb2ae585af6ee5bb4d7d973ad74ed # v5.1.0
         with:
-          go-version: '1.23'
+          go-version: '1.25'
       - name: Install gh-aw extension
         run: |
           curl -fsSL https://raw.githubusercontent.com/githubnext/gh-aw/refs/heads/main/install-gh-aw.sh | bash