Pin utopia-php/migration to fix-migration-sentry-leak branch for testing

Wires the worker against the matching utopia-php/migration branch so
end-to-end testing of the Sentry-routing fix can run against both
sides of the change set.

Run `composer update utopia-php/migration --with-all-dependencies`
after pulling to refresh composer.lock. Revert before merging.

composer.json

@@ -74,7 +74,7 @@
         "utopia-php/locale": "0.8.*",
         "utopia-php/logger": "0.6.*",
         "utopia-php/messaging": "0.22.*",
-        "utopia-php/migration": "1.9.*",
+        "utopia-php/migration": "dev-fix-migration-sentry-leak as 1.9.999",
         "utopia-php/platform": "0.13.*",
         "utopia-php/pools": "1.*",
         "utopia-php/span": "1.1.*",
@@ -118,5 +118,11 @@
             "php-http/discovery": true,
             "tbachert/spi": true
         }
-    }
+    },
+    "repositories": [
+        {
+            "type": "vcs",
+            "url": "https://github.com/utopia-php/migration"
+        }
+    ]
 }