Run unit tests in CI and use go 1.22

[eapolinario]

We have a few unit tests, so let's make that those run in CI on PRs and merges to master.

edit: I also bumped the version to match the one in the main flyte repo since unit tests were failing to run in CI due to:

go: downloading golang.org/x/text v0.16.0
Error: ../../../go/pkg/mod/golang.org/x/crypto@v0.25.0/curve25519/curve25519.go:13:8: package crypto/ecdh is not in GOROOT (/opt/hostedtoolcache/go/1.18.10/x64/src/crypto/ecdh)
Error: Process completed with exit code 1.

[ddl-ebrown]

@eapolinario wondering if you're going to get this one updated for Go 1.23?

I see the effort has started over at flyteorg/flyte#6249 for Flyte ... haven't looked closely enough at Stow or its dependencies to see if there are any Go 1.23 concerns.