Composer: avoid writing a lock file (#2443)

* Composer: avoid writing a lock file

* Allow creation of composer.lock during some tests

.github/workflows/basic-qa.yml

@@ -137,6 +137,10 @@ jobs:
           phpcsstandards/phpcsutils:"${{ env.UTILS_DEV }}"
           phpcsstandards/phpcsextra:"${{ env.EXTRA_DEV }}"
 
+      - name: Enable creation of `composer.lock` file
+        if: ${{ matrix.dependencies == 'lowest' }}
+        run: composer config --unset lock
+
       - name: Install Composer dependencies
         uses: ramsey/composer-install@v3
         with:

.github/workflows/quicktest.yml

@@ -41,6 +41,10 @@ jobs:
           ini-values: error_reporting=-1, display_errors=On
           coverage:  ${{ github.ref_name == 'develop' && 'xdebug' || 'none' }}
 
+      - name: Enable creation of `composer.lock` file
+        if: ${{ matrix.dependencies == 'lowest' }}
+        run: composer config --unset lock
+
       - name: Install Composer dependencies
         uses: ramsey/composer-install@v3
         with:

.github/workflows/unit-tests.yml

@@ -112,6 +112,10 @@ jobs:
           phpcsstandards/phpcsutils:"${{ env.UTILS_DEV }}"
           phpcsstandards/phpcsextra:"${{ env.EXTRA_DEV }}"
 
+      - name: Enable creation of `composer.lock` file
+        if: ${{ matrix.dependencies == 'lowest' }}
+        run: composer config --unset lock
+
       - name: Install Composer dependencies
         uses: ramsey/composer-install@v3
         with:

composer.json

@@ -39,7 +39,8 @@
 	"config": {
 		"allow-plugins": {
 			"dealerdirect/phpcodesniffer-composer-installer": true
-		}
+		},
+		"lock": false
 	},
 	"scripts": {
 		"lint": [