update of public:publickey through at_client.put fails due to regex mismatch

[murali-shris]

Describe the bug

Update of

public:publickey@alice

through at_client.put method fails.
Underlying cause is regex issue in at_commons

Steps to reproduce

run the below unit test

 test('Validate reserved publickey', () {
      String key = 'public:publickey@alice';
      var type = RegexUtil.keyType(key, false);
      expect(type, KeyType.reservedKey);
      var match = RegexUtil.matchAll(Regexes(false).reservedKey, key);
      expect(match, true);
    });

Expected behavior

The key should be considered as a reserved key and the unit test should pass

Screenshots

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Smartphones

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Were you using an atApplication when the bug was found?

No response

Additional context

No response