Bump shivammathur/setup-php from 2.25.2 to 2.25.4 (#19)

Bumps [shivammathur/setup-php](https://github.com/shivammathur/setup-php) from 2.25.2 to 2.25.4.
- [Release notes](https://github.com/shivammathur/setup-php/releases)
- [Commits](shivammathur/setup-php@2.25.2...2.25.4)

---
updated-dependencies:
- dependency-name: shivammathur/setup-php
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

.github/workflows/on-pull-request.yml

@@ -24,7 +24,7 @@ jobs:
         uses: actions/checkout@v3
 
       - name: Installing PHP...
-        uses: shivammathur/[email protected].2
+        uses: shivammathur/[email protected].4
         with:
           php-version: ${{ matrix.php }}
           extensions: curl, gd, json, mbstring, pcre, session