Build: Make browser tests correctly run on multiple jQuery versions

There was a typo in `jtr-local.yml`, making the runs using it load with a huge
query string containing all the jQuery versions listed joined. Also, only IE
and Safari runs even tried to use this config.

This all meant only one jQuery version was actually tested.

Author: mgol

.github/workflows/browser-tests.yml

@@ -43,7 +43,7 @@ jobs:
         run: npm install
 
       - name: Run tests
-        run: npm run test:browser -- -f plugin=${{ matrix.MIGRATE_VERSION }}
+        run: npm run test:browser -- -c jtr-local.yml -f plugin=${{ matrix.MIGRATE_VERSION }}
 
   ie:
     runs-on: windows-latest

jtr-local.yml

@@ -1,6 +1,6 @@
 version: 1
 
-flags:
+runs:
   jquery:
     - git
     - git.min