Update paho-mqtt requirement from <2 to <3

[dependabot]

Updates the requirements on paho-mqtt to permit the latest version.

Release notes

Sourced from paho-mqtt's releases.

v2.1.0

• Make transition from 1.x to 2.x version smoother (Closes #831)
• Fix "protocol" property (Closes #820)
• Fix publish() a bytearray payload (Closes #833)
• Fix some type annotations (Closes #828)
• Fix loop_stop() not stopping thread when called from callback (Closes #809)
• Fix some documentation errors (Closes #817, #823, #832, #838)
• Add support for Unix socket (Closes #829)
• Fix flaky test (Closes #789)

Changelog

Sourced from paho-mqtt's changelog.

v2.1.0 - 2024-04-29

• Make transition from 1.x to 2.x version smoother (Closes #831)
• Fix "protocol" property (Closes #820)
• Fix publish() a bytearray payload (Closes #833)
• Fix some type annotations (Closes #828)
• Fix loop_stop() not stopping thread when called from callback (Closes #809)
• Fix some documentation errors (Closes #817, #823, #832, #838)
• Add support for Unix socket (Closes #829)
• Fix flaky test (Closes #789)

v2.0.0 - 2024-02-10

This release include breaking change. See migrations <https://eclipse.dev/paho/files/paho.mqtt.python/html/migrations.html>_ for more details on how to upgrade.

• BREAKING Added callback_api_version. This break ALL users of paho-mqtt Client class. See docs/migrations.rst or online version <https://eclipse.dev/paho/files/paho.mqtt.python/html/migrations.html>_ for details on how to upgrade. tl; dr; add CallbackAPIVersion.VERSION1 to first argument of Client()

• BREAKING Drop support for Python 2.7, Python 3.5 and Python 3.6 Minimum tested version is Python 3.7 Python version up to Python 3.12 are tested.

• BREAKING connect_srv changed it signature to take an additional bind_port parameter. This is a breaking change, but in previous version connect_srv was broken anyway. Closes #493.

• BREAKING Remove some deprecated argument and method:

  • max_packets argument in loop(), loop_write() and loop_forever() is removed
  • force argument in loop_stop() is removed
  • method message_retry_set() is removed

• BREAKING Remove the base62, WebsocketWrapper and ConnectionState, as user shouldn't directly use them.

• Possible breaking change: Add properties to access most Client attribute. Closes #764. Since this add new properties like logger, if a sub-class defined logger, the two logger will conflict.

• Add version 2 of user-callback which allow to access MQTTv5 reason code & properties that were missing from on_publish callback. Also it's more consistent in parameter order or between MQTTv3 and MQTTv5.

• Add types to Client class, which caused few change which should be compatible. Known risk of breaking changes:

  • Use enum for returned error code (like MQTT_ERR_SUCCESS). It use an IntEnum which should be a drop-in replacement. Excepted if someone is doing "rc is 0" instead of "rc == 0".
  • reason in on_connect callback when using MQTTv5 is now always a ReasonCode object. It used to possibly be an integer with the value 132.
  • MQTTMessage field "dup" and "retain" used to be integer with value 0 and 1. They are now boolean.

• Add support for ALPN protocols on TLS connection. Closes #790 & #648.

• Add on_pre_connect() callback, which is called immediately before a connection attempt is made.

... (truncated)

Commits

• af64a43 Bump version to 2.1.0
• 54e2e69 Update changelog
• 0776a00 Merge pull request #839 from eclipse/fix-bytearray-payload
• 7795dcd Fix publish() a bytearray payload
• 29c1d43 Merge pull request #838 from REX2626/master
• 27bbdc3 Merge pull request #829 from akrpic77/ak_add_unix_transport
• a0554dd Fix linter report
• 8503635 Merge pull request #832 from eclipse/fix-link-to-migrations
• e96ff75 Try to fix tests
• d4d0715 Fix tests with msg.retain value check
• Additional commits viewable in compare view

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[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 100.00%. Comparing base (7011836) to head (414d597).

Additional details and impacted files

@@            Coverage Diff            @@
##              main       #27   +/-   ##
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  Coverage   100.00%   100.00%           
=========================================
  Files            4         4           
  Lines          158       158           
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  Hits           158       158           

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unittests	100.00% <ø> (ø)

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