chore: Update CODEOWNERS for credentialdiggerScan step (#4348)

* Update CODEOWNERS for credentialdiggerScan step

* Update .github/CODEOWNERS

* Update .github/CODEOWNERS

---------

Co-authored-by: Ashly Mathew <ashlymathew93@gmail.com>
Co-authored-by: Ashly Mathew <ashly.mathew@sap.com>
Co-authored-by: Christopher Fenner <26137398+CCFenner@users.noreply.github.com>

.github/CODEOWNERS

@@ -63,6 +63,9 @@ AbapEnvironment*                                @SAP/jenkins-library-abap
 ascAppUpload*                                   @Mau04 @inf2381
 AscAppUpload*                                   @Mau04 @inf2381
 
+credentialdiggerScan*                           @SAP/credential-digger-members @SAP/credential-digger-admins 
+CredentialdiggerScan*                           @SAP/credential-digger-admins @SAP/credential-digger-members 
+
 #####################
 # Integration tests #
 #####################