For #13715, this:
- Upgrades the Go version to `1.21.1`, infrastructure changes are
addressed separately at https://github.com/fleetdm/fleet/pull/13878
- Upgrades the linter version, as the current version doesn't work well
after the Go upgrade
- Fixes new linting errors (we now get errors for memory aliasing in
loops! 🎉 )
After this is merged people will need to:
1. Update their Go version. I use `gvm` and I did it like:
```
$ gvm install go1.21.1
$ gvm use go1.21.1 --default
```
2. Update the local version of `golangci-lint`:
```
$ go install github.com/golangci/golangci-lint/cmd/golangci-lint@v1.54.2
```
3. (optional) depending on your setup, you might need to re-install some
packages, for example:
```
# goimports to automatically import libraries
$ go install golang.org/x/tools/cmd/goimports@latest
# gopls for the language server
$ go install golang.org/x/tools/gopls@latest
# etc...
```
This PR requires the Windows MDM configuration changes - This will be
updated next week
- [x] Changes file added for user-visible changes in `changes/` or
`orbit/changes/`.
See [Changes
files](https://fleetdm.com/docs/contributing/committing-changes#changes-files)
for more information.
- [x] Documented any API changes (docs/Using-Fleet/REST-API.md or
docs/Contributing/API-for-contributors.md)
- [x] Documented any permissions changes
- [X] Added/updated tests
- [X] Manual QA for all new/changed functionality
- For Orbit and Fleet Desktop changes:
