Point CI at renamed qa-tools workflow and bump toolchain

phpdb-qa-tools renamed qa.yml to continuous-integration.yml on 0.1.x, so the
existing reference no longer resolved and CI could not start.

Author: simon-mundy

.github/workflows/ci.yml

@@ -6,7 +6,7 @@ on:
 
 jobs:
   qa:
-    uses: php-db/phpdb-qa-tools/.github/workflows/qa.yml@0.1.x
+    uses: php-db/phpdb-qa-tools/.github/workflows/continuous-integration.yml@0.1.x
     with:
       php-versions: '["8.2", "8.3", "8.4", "8.5"]'
       run-integration: false