Update JamesIves/github-pages-deploy-action action to v4.7.3 (#1817)

Signed-off-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>
Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

.github/workflows/site-build.yml

@@ -36,7 +36,7 @@ jobs:
           npm run build
       
       - name: Deploy 🚀
-        uses: JamesIves/github-pages-deploy-action@15de0f09300eea763baee31dff6c6184995c5f6a # v4.7.2
+        uses: JamesIves/github-pages-deploy-action@6c2d9db40f9296374acc17b90404b6e8864128c8 # v4.7.3
         with:
           ssh-key: ${{ secrets.DEPLOY_KEY }}
           branch: gh-pages