Attempt fixing php8.1 build

.github/workflows/continuous-integration.yml

@@ -103,6 +103,12 @@ jobs:
         # using ~ here to avoid issues with windows CLI removing the ^
         run: 'composer require --no-update --dev "symfony/phpunit-bridge:~5.2"'
 
+      # temporary fix until phpunit-bridge has a release supporting 8.1
+      - name: "Require latest dev PHPUnitBridge for PHP 8.1"
+        if: "matrix.experimental"
+        # using ~ here to avoid issues with windows CLI removing the ^
+        run: 'composer require --no-update --dev "symfony/phpunit-bridge:~5.4@dev"'
+
       - name: "Update dev requirements to latest available for the current PHP even on locked builds as they are not bundled dependencies"
         run: "composer update ${{ env.COMPOSER_FLAGS }} symfony/phpunit-bridge phpspec/prophecy phpdocumentor/* sebastian/* doctrine/instantiator"