GH Actions: Bump ramsey/composer-install from 3 to 4

Bumps [ramsey/composer-install](https://github.com/ramsey/composer-install) from 3 to 4.
- [Release notes](https://github.com/ramsey/composer-install/releases)
- [Commits](ramsey/composer-install@v3...v4)

---
updated-dependencies:
- dependency-name: ramsey/composer-install
  dependency-version: '4'
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

Author: dependabot[bot]

.github/workflows/reusable-build-binary.yml

@@ -25,7 +25,7 @@ jobs:
           fail-fast: true
 
       - name: Install Composer dependencies
-        uses: ramsey/composer-install@v3
+        uses: ramsey/composer-install@v4
         with:
           composer-options: "--no-dev"
           # Bust the cache at least once a month - output format: YYYY-MM.

.github/workflows/test.yml

@@ -31,7 +31,7 @@ jobs:
         uses: actions/checkout@v6
 
       - name: Install Composer dependencies
-        uses: ramsey/composer-install@v3
+        uses: ramsey/composer-install@v4
         with:
           # Bust the cache at least once a month - output format: YYYY-MM.
           custom-cache-suffix: $(date -u "+%Y-%m")
@@ -93,14 +93,14 @@ jobs:
 
       - name: Install Composer dependencies
         if: ${{ matrix.php != '8.6' }}
-        uses: ramsey/composer-install@v3
+        uses: ramsey/composer-install@v4
         with:
           # Bust the cache at least once a month - output format: YYYY-MM.
           custom-cache-suffix: $(date -u "+%Y-%m")
 
       - name: "Install Composer dependencies (PHP nightly, ignore PHP reqs)"
         if: ${{ matrix.php == '8.6' }}
-        uses: ramsey/composer-install@v3
+        uses: ramsey/composer-install@v4
         with:
           composer-options: --ignore-platform-req=php
           custom-cache-suffix: $(date -u "+%Y-%m")