Bump php-forge/actions/.github/workflows/phpunit.yml from 1 to 2

Bumps [php-forge/actions/.github/workflows/phpunit.yml](https://github.com/php-forge/actions) from 1 to 2.
- [Release notes](https://github.com/php-forge/actions/releases)
- [Changelog](https://github.com/php-forge/actions/blob/main/CHANGELOG.md)
- [Commits](php-forge/actions@v1...v2)

---
updated-dependencies:
- dependency-name: php-forge/actions/.github/workflows/phpunit.yml
  dependency-version: '2'
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

.github/workflows/build.yml

@@ -19,6 +19,6 @@ name: build
 
 jobs:
   phpunit:
-    uses: php-forge/actions/.github/workflows/phpunit.yml@v1
+    uses: php-forge/actions/.github/workflows/phpunit.yml@v2
     secrets:
       CODECOV_TOKEN: ${{ secrets.CODECOV_TOKEN }}