CI: Fix Composer root version guessing

.github/actions/install/action.yml

@@ -35,21 +35,6 @@ runs:
             run: |
                 composer config --global github-oauth.github.com "${{ github.token }}"
 
-        -   name: Setup Composer root version
-            if: ${{ github.ref_type == 'branch' }}
-            shell: bash
-            working-directory: ${{ inputs.path }}
-            run: |
-                COMPOSER_ROOT_VERSION=
-
-                if [ -z "$(composer config extra.branch-alias."dev-${GITHUB_HEAD_REF:-GITHUB_REF_NAME}" 2> /dev/null)" ]; then
-                    COMPOSER_ROOT_VERSION="$(php -r "
-                        require('./lib/Pico.php');
-                        echo preg_replace('/\.[0-9]+-dev$/', '.x-dev', Pico::VERSION);
-                    ")"
-                    echo "COMPOSER_ROOT_VERSION=$COMPOSER_ROOT_VERSION" | tee -a "$GITHUB_ENV"
-                fi
-
         -   name: Get Composer cache directory
             shell: bash
             working-directory: ${{ inputs.path }}
@@ -65,6 +50,26 @@ runs:
                 restore-keys: |
                     ${{ runner.os }}-composer-
 
+        -   name: Setup Composer root version
+            if: ${{ github.ref_type == 'branch' }}
+            shell: bash
+            working-directory: ${{ inputs.path }}
+            run: |
+                COMPOSER_ROOT_VERSION=
+
+                COMPOSER_ROOT_VERSION="$(composer config \
+                    extra.branch-alias."dev-${GITHUB_HEAD_REF:-GITHUB_REF_NAME}" \
+                    2> /dev/null)"
+
+                if [ -z "$COMPOSER_ROOT_VERSION" ]; then
+                    COMPOSER_ROOT_VERSION="$(php -r "
+                        require('./lib/Pico.php');
+                        echo preg_replace('/\.[0-9]+-dev$/', '.x-dev', Pico::VERSION);
+                    ")"
+                fi
+
+                echo "COMPOSER_ROOT_VERSION=$COMPOSER_ROOT_VERSION" | tee -a "$GITHUB_ENV"
+
         -   name: Install Composer dependencies
             shell: bash
             working-directory: ${{ inputs.path }}