github-actions: bump shivammathur/setup-php

Bumps the minor-patch-dependencies group with 1 update: [shivammathur/setup-php](https://github.com/shivammathur/setup-php).


Updates `shivammathur/setup-php` from 2.30.2 to 2.30.4
- [Release notes](https://github.com/shivammathur/setup-php/releases)
- [Commits](shivammathur/setup-php@2.30.2...2.30.4)

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

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

.github/workflows/continuous-integration.yml

@@ -90,7 +90,7 @@ jobs:
           persist-credentials: false
 
       - name: "Install PHP"
-        uses: "shivammathur/[email protected].2"
+        uses: "shivammathur/[email protected].4"
         with:
           php-version: "${{ matrix.php-version }}"
           extensions: "none, phar, json, opcache, ctype, curl, dom, iconv, intl, mbstring, simplexml, tokenizer, xml, xmlwriter"
@@ -146,7 +146,7 @@ jobs:
           persist-credentials: false
 
       - name: "Install PHP"
-        uses: "shivammathur/[email protected].2"
+        uses: "shivammathur/[email protected].4"
         with:
           php-version: "${{ matrix.php-version }}"
           extensions: "none, phar, json, opcache, ctype, curl, dom, iconv, intl, mbstring, simplexml, tokenizer, xml, xmlwriter"