chore(deps-dev): bump bootstrap from 5.3.0-alpha2 to 5.3.0-alpha3 (#5026)

Bumps [bootstrap](https://github.com/twbs/bootstrap) from 5.3.0-alpha2 to 5.3.0-alpha3.
- [Release notes](https://github.com/twbs/bootstrap/releases)
- [Commits](https://github.com/twbs/bootstrap/compare/v5.3.0-alpha2...v5.3.0-alpha3)

---
updated-dependencies:
- dependency-name: bootstrap
  dependency-type: direct:development
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

package.json

@@ -61,7 +61,7 @@
     "@typescript-eslint/parser": "^5.57.0",
     "astro": "^2.1.9",
     "autoprefixer": "^10.4.14",
-    "bootstrap": "^5.3.0-alpha2",
+    "bootstrap": "^5.3.0-alpha3",
     "bundlewatch": "^0.3.3",
     "clean-css-cli": "^5.6.2",
     "concurrently": "^8.0.1",