Change ping handle from @KitKat-team to @kit-squad for the Calypso GB…

… E2E test results that are posted in the release threaded messages in #gutenberg-on-dotcom (#82547)

.teamcity/_self/projects/WPComTests.kt

@@ -139,7 +139,7 @@ fun gutenbergPlaywrightBuildType( targetDevice: String, buildUuid: String, atomi
 				name = "Post Failure Message to Slack"
 				executionMode = BuildStep.ExecutionMode.RUN_ONLY_ON_FAILURE
 				path = "./bin/post-threaded-slack-message.sh"
-				arguments = "%GB_E2E_ANNOUNCEMENT_SLACK_CHANNEL_ID% %GB_E2E_ANNOUNCEMENT_THREAD_TS% \"The $buildName failed! Could you have a look? @kitkat-team @calypso-platform-team! <%teamcity.serverUrl%/viewLog.html?buildId=%teamcity.build.id%|View build>\" %GB_E2E_ANNOUNCEMENT_SLACK_API_TOKEN%"
+				arguments = "%GB_E2E_ANNOUNCEMENT_SLACK_CHANNEL_ID% %GB_E2E_ANNOUNCEMENT_THREAD_TS% \"The $buildName failed! Could you have a look? @kit-squad @calypso-platform-team! <%teamcity.serverUrl%/viewLog.html?buildId=%teamcity.build.id%|View build>\" %GB_E2E_ANNOUNCEMENT_SLACK_API_TOKEN%"
 			}
 		},
 		buildFeatures = {