Cut anchors currently unsupported by GHA

.github/workflows/ansible-test-plugins.yml

@@ -94,7 +94,7 @@ jobs:
           - 3307:3306
         # We write our own health-cmd because the mariadb container does not
         # provide a healthcheck
-        options: &healthcheck >
+        options: >
           --health-cmd mysqladmin ping -P 3306 -pmsandbox
           | grep alive
           || exit 1
@@ -104,14 +104,20 @@ jobs:
           MARIADB_ROOT_PASSWORD: msandbox
         ports:
           - 3308:3306
-        options: *healthcheck
+        options: >
+          --health-cmd mysqladmin ping -P 3306 -pmsandbox
+          | grep alive
+          || exit 1
       db_replica2:
         image: mariadb:10.5
         env:
           MARIADB_ROOT_PASSWORD: msandbox
         ports:
           - 3309:3306
-        options: *healthcheck
+        options: >
+          --health-cmd mysqladmin ping -P 3306 -pmsandbox
+          | grep alive
+          || exit 1
 
     steps:
       - name: >-