Update pull request workflow for 6.2

Author: euanh

.github/workflows/pull_request.yml

@@ -23,6 +23,7 @@ jobs:
             linux_5_10_enabled: false
             linux_6_0_arguments_override: "--skip SmokeTests --skip TarInteropTests"
             linux_6_1_arguments_override: "--skip SmokeTests --skip TarInteropTests"
+            linux_6_2_arguments_override: "--skip SmokeTests --skip TarInteropTests"
             linux_nightly_6_1_arguments_override: "--skip SmokeTests --skip TarInteropTests"
             linux_nightly_main_arguments_override: "--skip SmokeTests --skip TarInteropTests"