build(deps): bump withastro/action from 3 to 5

Bumps [withastro/action](https://github.com/withastro/action) from 3 to 5.
- [Release notes](https://github.com/withastro/action/releases)
- [Commits](withastro/action@v3...v5)

---
updated-dependencies:
- dependency-name: withastro/action
  dependency-version: '5'
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

.github/workflows/deploy.yml

@@ -21,7 +21,7 @@ jobs:
       - name: Checkout your repository using git
         uses: actions/checkout@v4
       - name: Install, build, and upload your site
-        uses: withastro/action@v3
+        uses: withastro/action@v5
           # with:
           # path: . # The root location of your Astro project inside the repository. (optional)
           # node-version: 20 # The specific version of Node that should be used to build your site. Defaults to 20. (optional)