chore: adds missing .gitallowed config to pass checks

Author: bencegadanyi1-nhs

.gitallowed

@@ -23,6 +23,9 @@ sha256:[a-f0-9]{64}
 .*=\s*"[><=!~^,0-9\s\.]+"
 app = App\(token=bot_token\)
 token=bot_token
+token="test-token"
 token: slackBotToken
 token: props\.slackBotToken
 secretValue: JSON\.stringify\(\{token: props\.slackBotToken\}\)
+token = slack_event_data\["bot_token"\]
+client = WebClient\(token=token\)