chore(deps): update dependency apprise to v1.7.3

[renovate[bot]]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
apprise	1.7.2 -> 1.7.3

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Release Notes

caronc/apprise (apprise)

### [`v1.7.3`](https://togithub.com/caronc/apprise/releases/tag/v1.7.3) [Compare Source](https://togithub.com/caronc/apprise/compare/v1.7.2...v1.7.3) #### Details Another minor release to push some outstanding bug-fixes that have accumulated and patched over the past month ##### :mega: New Notification Services: - [Revolt](https://togithub.com/caronc/apprise/wiki/Notify_revolt) Support added. ([#​1057](https://togithub.com/caronc/apprise/issues/1057) and [#​1062](https://togithub.com/caronc/apprise/issues/1062)) - Thank you [@​ktwrd](https://togithub.com/ktwrd) ##### :bulb: Features - `mailto://` comcast.net email template added ([#​1059](https://togithub.com/caronc/apprise/issues/1059)) - `mailto://` improved custom email server handling ([`5ae212f`](https://togithub.com/caronc/apprise/commit/5ae212fbafb94a3d03c61739d2e81f7502595902)) - `to=` and `from_addr=` are no longer required in most circumstances and can be automatically determined based on basic information provided. - `ntfy://` markdown support added ([#​1056](https://togithub.com/caronc/apprise/issues/1056)) - just add `?format=markdown` to format the content accordingly ##### :heart: Life-Cycle Support - `paho-mqtt` v2.0 was released and it's documentation for v1.6.1 was completely incompatible with it. For the stability of the `mqtt://` plugin, `paho-mqtt` has been pinned to the stable v1.x release ([#​1065](https://togithub.com/caronc/apprise/issues/1065)) ##### :bug: Bugfixes - Fixed documents with respect to the use of `yaml` files ([#​1069](https://togithub.com/caronc/apprise/issues/1069)) - Thank you [@​samueltardieu](https://togithub.com/samueltardieu) - Updated CLI so that it can read both `.yml` and `.yaml` files by default ([#​1073](https://togithub.com/caronc/apprise/issues/1073)) - `macosx://` - Update terminal-notifier notify_paths ([#​1052](https://togithub.com/caronc/apprise/issues/1052)) - Thank you [@​joergschultzelutter](https://togithub.com/joergschultzelutter) - Asynchronous Dynamic Module Loading Support ([#​1071](https://togithub.com/caronc/apprise/issues/1071)) - This was a bug introduced with Dynamic Module Loading (in Apprise v1.7.0) preventing threading/async support Apprise is available [on PyPI](https://pypi.org/project/apprise/) through *pip*: ```bash ### Install Apprise v1.7.3 from PyPI pip install apprise==1.7.3 ```

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