Build: Test on iOS 18

1. Test on iOS 18 with jQuery 3.x & Git.
2. Don't test on iOS 15 with jQuery Git.

Closes gh-533

Author: mgol

.github/workflows/browserstack-3.x.yml

@@ -43,6 +43,7 @@ jobs:
           - 'Firefox_78'
           - 'Firefox_60'
           - 'Firefox_48'
+          - '__iOS_18'
           - '__iOS_17'
           - '__iOS_16'
           - '__iOS_15'

.github/workflows/browserstack-git.yml

@@ -35,9 +35,9 @@ jobs:
           - 'Firefox_latest'
           - 'Firefox_latest-1'
           - 'Firefox_115'
+          - '__iOS_18'
           - '__iOS_17'
           - '__iOS_16'
-          - '__iOS_15'
     steps:
       - name: Checkout
         uses: actions/checkout@692973e3d937129bcbf40652eb9f2f61becf3332 # v4.1.7