Roll back ramsey/composer-install action to 2.3.1

| datasource  | package                 | from | to    |
| ----------- | ----------------------- | ---- | ----- |
| github-tags | ramsey/composer-install | v2   | 2.3.1 |


Signed-off-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

.github/workflows/test.yml

@@ -42,7 +42,7 @@ jobs:
           extensions: mbstring
 
       - name: "Install dependencies"
-        uses: "ramsey/composer-install@v2"
+        uses: "ramsey/composer-install@2.3.1"
         with:
           dependency-versions: "${{ matrix.dependencies }}"