Bump ramsey/composer-install from 2 to 3

Bumps [ramsey/composer-install](https://github.com/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
...

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

Author: dependabot[bot]

.github/workflows/phpcs.yml

@@ -13,7 +13,7 @@ jobs:
           coverage: none
           tools: composer, cs2pr
       - name: Install Composer dependencies for PHP
-        uses: "ramsey/composer-install@v2"
+        uses: "ramsey/composer-install@v3"
       - name: Detect coding standard violations
         run: composer lint
 

.github/workflows/phpunit.yml

@@ -26,7 +26,7 @@ jobs:
           tools: composer, phpunit-polyfills
           extensions: mysql
       - name: Install Composer dependencies for PHP
-        uses: "ramsey/composer-install@v2"
+        uses: "ramsey/composer-install@v3"
       - name: Install SVN
         run: sudo apt-get update && sudo apt-get install -y subversion
       - name: Setup Test Environment