Remove remaining uses of github.com/coreos/go-oidc/v3 with github.com/zitadel/oidc/v3

[Joerger]

Changes:

• Add a generic OIDC token validation function using github.com/zitadel/oidc/v3, adapted from Noah's additions for azure devops. The only intended functional change here is that the 15s provider timeout is used for all providers, rather than just the 2 newest additions.
• tctl sso configure uses zitadel's Discover function instead of the old coreos provider function.
• Update .golangci.yml to only allow github.com/zitadel/oidc/v3
• go mod tidy

Note: For some reason, I can't get rid of github.com/coreos/go-oidc and github.com/coreos/go-oidc/v3 from the go.sum, despite them being completely unused:

> go mod why github.com/coreos/go-oidc
# github.com/coreos/go-oidc
(main module does not need package github.com/coreos/go-oidc)

> go mod why github.com/coreos/go-oidc/v3
# github.com/coreos/go-oidc/v3
(main module does not need package github.com/coreos/go-oidc/v3)

[zmb3]

For some reason, I can't get rid of github.com/coreos/go-oidc and github.com/coreos/go-oidc/v3 from the go.sum, despite them being completely unused:

Do you need to update e_imports.go?

[rosstimothy]

go.sum still contains github.com/coreos/go-oidc because the libraries are still included via indirect references.

go mod graph | rg "github.com/coreos/go-oidc"
github.com/sigstore/cosign/v2@v2.5.0 github.com/coreos/go-oidc/v3@v3.12.0
github.com/sigstore/sigstore@v1.9.4 github.com/coreos/go-oidc/v3@v3.14.1
github.com/sigstore/sigstore-go@v0.7.1 github.com/coreos/go-oidc/v3@v3.12.0
k8s.io/apiserver@v0.33.0 github.com/coreos/go-oidc@v2.3.0+incompatible

[rosstimothy]

Oooof this is likely an accidental import from gopls and should be replaced with testify/assert

[rosstimothy]

#54094 (comment)

[rosstimothy]

This needs to be updated to include #55039.

[rosstimothy]

This needs to be updated to include #55039.