Bump ramsey/composer-install from 2 to 3 in the actions group

Bumps the actions group with 1 update: [ramsey/composer-install](https://github.com/ramsey/composer-install).


Updates `ramsey/composer-install` from 2 to 3
- [Release notes](https://github.com/ramsey/composer-install/releases)
- [Commits](ramsey/composer-install@v2...v3)

---
updated-dependencies:
- dependency-name: ramsey/composer-install
  dependency-version: '3'
  dependency-type: direct:production
  update-type: version-update:semver-major
  dependency-group: actions
...

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

Author: dependabot[bot]

.github/workflows/wordpress-tests.yml

@@ -48,7 +48,7 @@ jobs:
           coverage: none
 
       - name: Install Composer dependencies
-        uses: ramsey/composer-install@v2
+        uses: ramsey/composer-install@v3
         with:
           composer-options: "--prefer-dist --no-progress"