Retry altool --upload-app on return codes -5 and -11

[fran-tirapu]

Application loader tool can exit unexpectedly with return code -5 or -11 when running altool --upload-app without any error or warning messages in log output even though the application binary and authentication information are both valid. Subsequent altool --upload-app calls using the same binary can complete normally.

Handle such unexpected exits by enabling retrying for those exit codes.

Updated actions:

• app-store-connect publish

[priitlatt]

In general looks great. It just bugs me a little to call something "unknown" if we know its exact value. So I suggest to use "unexpected" instead.