Update min vm_service constraints

Author: bkonyi

.github/workflows/test-package.yml

@@ -46,7 +46,7 @@ jobs:
       fail-fast: false
       matrix:
         os: [ubuntu-latest, macos-latest, windows-latest]
-        sdk: [2.18.0, dev]
+        sdk: [2.19.0, dev]
     steps:
       - uses: actions/checkout@f43a0e5ff2bd294095638e18286ca9a3d1956744
       - uses: dart-lang/setup-dart@8a4b97ea2017cc079571daec46542f76189836b1

pubspec.yaml

@@ -13,7 +13,7 @@ dependencies:
   path: ^1.8.0
   source_maps: ^0.10.10
   stack_trace: ^1.10.0
-  vm_service: '>=9.4.0 <13.0.0'
+  vm_service: '>=11.9.0 <13.0.0'
 
 dev_dependencies:
   benchmark_harness: ^2.2.0