Cleanup and improve GitHub Actions

[arnested]

Use build matrix of go versions

GitHub Actions only tested the build using go 1.13 (which has been unsupported by the Go team for more than two years).

Introduce a build matrix testing all versions from the lowest supported by shoutrrr to the newest released by the Go team (shamelessly using my own Go Version Action).

Bump required go to 1.13 in go.mod

The matrix test showed the code didn't compile in go1.12 anymore.

Build release using latest Go version

The release action built the version for release with go 1.13. From now, we'll use the latest go release.

Bump codecov action version

The old version used node 12 which is deprecated by GitHub Actions

Use goreleaser action

Instead of installing goreleaser by ourselves, we'll let the goreleaser action install it.

Add @dependabot configuration

Let @dependabot create pull requests for new dependencies in go.mod, Dockerfile, and GitHub Actions. This should make it easier to stay up-to-date.

Add GitHub Action permissions

GitHub has introduced permissions for GitHub Actions to increase the safety of the actions.

[codecov]

Codecov Report

Base: 78.49% // Head: 78.54% // Increases project coverage by +0.05% 🎉

Coverage data is based on head (62f632b) compared to base (4a5ee05).
Patch has no changes to coverable lines.

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #273      +/-   ##
==========================================
+ Coverage   78.49%   78.54%   +0.05%     
==========================================
  Files          96       96              
  Lines        2934     4275    +1341     
==========================================
+ Hits         2303     3358    +1055     
- Misses        462      746     +284     
- Partials      169      171       +2     

Impacted Files	Coverage Δ
pkg/services/smtp/smtp_encmethod.go	80.00% <0.00%> (-7.50%)	⬇️
pkg/services/rocketchat/rocketchat_config.go	64.86% <0.00%> (-4.37%)	⬇️
pkg/services/opsgenie/opsgenie_entity.go	67.56% <0.00%> (-3.87%)	⬇️
pkg/services/pushover/pushover_config.go	87.09% <0.00%> (-2.91%)	⬇️
pkg/services/teams/teams.go	71.23% <0.00%> (-2.77%)	⬇️
pkg/services/discord/discord.go	79.01% <0.00%> (-1.69%)	⬇️
pkg/services/generic/generic.go	85.00% <0.00%> (-1.67%)	⬇️
pkg/services/opsgenie/opsgenie.go	64.47% <0.00%> (-1.63%)	⬇️
pkg/services/telegram/telegram_json.go	92.85% <0.00%> (-1.59%)	⬇️
pkg/services/pushover/pushover.go	72.72% <0.00%> (-1.47%)	⬇️
... and 85 more

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[piksel]

Looks great! Thanks.

[piksel]

In next I actually use Go v1.18, but it can probably be made to work with an earlier version with some ungeneralization.

[piksel]

I don't know if this is the cause, but it seems like PRs sometimes do not trigger the main action anymore...

[arnested]

I wouldn't have thought so. But I'll have a look in about an hour.

What pr did you notice it on?

[piksel]

In #283 it didn't trigger, but I first saw it somewhere else. It might've just be a github issue though, it seems fine now.

[piksel]

In #283 it didn't trigger, but I first saw it somewhere else. It might've just be a github issue though, it seems fine now.

[arnested]

Weird... I can't see why. I'll try to create a new PR with some minor documentation cleanup just to see what happens.

[arnested]

Weird... I can't see why. I'll try to create a new PR with some minor documentation cleanup just to see what happens.

#284 worked as intended. Maybe a GitHub slowdown.