fix(notify)!: resolve test & linter issues and fix dependencies compa…

…tibility (nikoksr#847)

fix(deps): update all dependencies

feat(service): Adds Mattermost service (nikoksr#516)

* feat(service): Adds Mattermost service

* refactor: Removes log msgs
fix: Adds PreSend and PostSend capabilities to user
docs: Updates doc.go and README.md

* refactor: Adds test cases
Adds presend and postsend tests for mattermost service

* refactor: Updates mattermost test cases

* refactor: update mattermost test cases

* refactor: update mattermost hook(s) test cases

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Co-authored-by: EthanEFung <[email protected]>
Co-authored-by: Niko Köser <[email protected]>

Add telegram.SetClient function (nikoksr#602)

Co-authored-by: Niko Köser <[email protected]>

feat(service): Add Web Push (nikoksr#441)

Co-authored-by: Kavii Suri <[email protected]>
Co-authored-by: Niko Köser <[email protected]>

fix(deps): update module google.golang.org/api to v0.113.0 (nikoksr#558)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

feat(service): Add Google Chat Service (nikoksr#501)

Co-authored-by: Niko Köser <[email protected]>

feat(service): add generic HTTP service (nikoksr#506)

Add plaintext toggle (nikoksr#476)

Co-authored-by: Niko Köser <[email protected]>

fix(deps): update github.com/rocketchat/rocket.chat.go.sdk digest to …

…a3fd332 (nikoksr#472)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>