Build updates

[hanzei]

Summary

• Update to github.com/mattermost/mattermost-server/v6
• make apply is not longer needed thanks to go embed
• make server now only build the current OS & ARCH combination if MM_SERVICESETTINGS_ENABLEDEVELOPER is set allowing developers to build faster
• Dependency update

Ticket Link

None

[codecov[bot]]

Codecov Report

Base: 24.56% // Head: 22.38% // Decreases project coverage by -2.17% :warning:

Coverage data is based on head (5cd1f1c) compared to base (40fd68c). Patch coverage: 20.00% of modified lines in pull request are covered.

Additional details and impacted files

```diff @@ Coverage Diff @@ ## master #102 +/- ## ========================================== - Coverage 24.56% 22.38% -2.18% ========================================== Files 7 6 -1 Lines 403 402 -1 ========================================== - Hits 99 90 -9 - Misses 287 294 +7 - Partials 17 18 +1 ``` | [Impacted Files](https://codecov.io/gh/mattermost/mattermost-plugin-agenda/pull/102?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=mattermost) | Coverage Δ | | |---|---|---| | [server/command.go](https://codecov.io/gh/mattermost/mattermost-plugin-agenda/pull/102/diff?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=mattermost#diff-c2VydmVyL2NvbW1hbmQuZ28=) | `0.00% <0.00%> (ø)` | | | [server/main.go](https://codecov.io/gh/mattermost/mattermost-plugin-agenda/pull/102/diff?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=mattermost#diff-c2VydmVyL21haW4uZ28=) | `0.00% <ø> (ø)` | | | [server/meeting.go](https://codecov.io/gh/mattermost/mattermost-plugin-agenda/pull/102/diff?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=mattermost#diff-c2VydmVyL21lZXRpbmcuZ28=) | `40.00% <ø> (ø)` | | | [server/plugin.go](https://codecov.io/gh/mattermost/mattermost-plugin-agenda/pull/102/diff?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=mattermost#diff-c2VydmVyL3BsdWdpbi5nbw==) | `25.49% <33.33%> (-0.26%)` | :arrow_down: | | [server/utils.go](https://codecov.io/gh/mattermost/mattermost-plugin-agenda/pull/102/diff?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=mattermost#diff-c2VydmVyL3V0aWxzLmdv) | `78.04% <0.00%> (-17.08%)` | :arrow_down: | Help us with your feedback. Take ten seconds to tell us [how you rate us](https://about.codecov.io/nps?utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=mattermost). Have a feature suggestion? [Share it here.](https://app.codecov.io/gh/feedback/?utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=mattermost)

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