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-type: direct:production
  update-type: version-update:semver-major
...

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

.github/workflows/ci.yml

@@ -39,7 +39,7 @@ jobs:
       - name: "Validate composer.json and composer.lock"
         run: "composer validate --strict --no-interaction --ansi"
       - name: "Install dependencies with Composer"
-        uses: "ramsey/composer-install@v2"
+        uses: "ramsey/composer-install@v3"
       - name: "Run tests"
         run: "make test"
 
@@ -59,6 +59,6 @@ jobs:
           php-version: "8.0"
           coverage: "none"
       - name: "Install dependencies with Composer"
-        uses: "ramsey/composer-install@v2"
+        uses: "ramsey/composer-install@v3"
       - name: "Run PHPStan"
         run: "make phpstan"