ci: use latest checkout and setup-uv in uv-lock-upgrade

Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>

Author: nealrichardson

.github/workflows/uv-lock-upgrade.yml

@@ -17,10 +17,10 @@ jobs:
       with:
         client-id: ${{ secrets.POSIT_CONNECT_PROJECTS_CLIENT_ID }}
         private-key: ${{ secrets.POSIT_CONNECT_PROJECTS_PEM }}
-    - uses: actions/checkout@v6
+    - uses: actions/checkout@v7
       with:
         persist-credentials: false
-    - uses: astral-sh/setup-uv@v6
+    - uses: astral-sh/setup-uv@v10.3.0
     - name: Upgrade uv.lock
       id: upgrade
       run: |