Bump endlessm/amalgamate-pages from 1 to 2

Bumps [endlessm/amalgamate-pages](https://github.com/endlessm/amalgamate-pages) from 1 to 2.
- [Release notes](https://github.com/endlessm/amalgamate-pages/releases)
- [Commits](endlessm/amalgamate-pages@v1...v2)

---
updated-dependencies:
- dependency-name: endlessm/amalgamate-pages
  dependency-version: '2'
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

Author: dependabot[bot]

.github/workflows/github-pages.yml

@@ -21,7 +21,7 @@ jobs:
     name: Publish all branches to GitHub Pages
     runs-on: ubuntu-latest
     steps:
-      - uses: endlessm/amalgamate-pages@v1
+      - uses: endlessm/amalgamate-pages@v2
         with:
           workflow_name: "Build and Export Game"
           artifact_name: web