Updating CODEOWNERS for Communication Identity & Common Packages (Azure#27568)

Author: mjafferi-msft

.github/CODEOWNERS

@@ -79,13 +79,13 @@
 /sdk/communication/azure-communication-sms/                          @RoyHerrod @arifibrahim4
 
 # PRLabel: %Communication - Identity
-/sdk/communication/azure-communication-identity/                     @Azure/acs-identity-sdk @petrsvihlik @AikoBB @maximrytych-ms @ostoliarova-msft
+/sdk/communication/azure-communication-identity/                     @Azure/acs-identity-sdk @petrsvihlik @AikoBB @maximrytych-ms @ostoliarova-msft @mjafferi-msft
 
 # PRLabel: %Communication - NetworkTraversal
 /sdk/communication/azure-communication-networktraversal/             @ajpeacock0 @nathpete-msft
 
 # PRLabel: %Communication - Common
-/sdk/communication/**/_shared/                                       @Azure/acs-identity-sdk @petrsvihlik @AikoBB @maximrytych-ms @ostoliarova-msft
+/sdk/communication/**/_shared/                                       @Azure/acs-identity-sdk @petrsvihlik @AikoBB @maximrytych-ms @ostoliarova-msft @mjafferi-msft
 
 # PRLabel: %Confidential Ledger
 sdk/confidentialledger/azure-confidentialledger                      @lynshi