feat: release v3 by merging next into main

[muhlemmer]

This branch is an intermediate state where next and main are merged together to solve merge conflicts. After the conflicts were resolved the following changes were made:

1. Regenerate proto stubs to match the latest version from zitadel
2. Update all go modules, so we make sure no security advisories stay active
3. Update release info in readme.

BREAKING CHANGES

See past commits from the next branch. This header will trigger v3 release.

Note to merger: This PR must not be squashed in order to keep proper commit history.

Closes https://github.com/zitadel/zitadel-go/issues/348

Definition of Ready

• [x] I am happy with the code
• [x] Short description of the feature/issue is added in the pr description
• [x] PR is linked to the corresponding user story
• [x] Acceptance criteria are met
• [x] All open todos and follow ups are defined in a new ticket and justified
• [x] Deviations from the acceptance criteria and design are agreed with the PO and documented.
• [x] No debug or dead code
• [x] My code has no repetitions
• [ ] Critical parts are tested automatically
• [ ] Where possible E2E tests are implemented
• [x] Documentation/examples are up-to-date
• [x] All non-functional requirements are met
• [x] Functionality of the acceptance criteria is checked manually on the dev system.

[codecov[bot]]

Codecov Report

Attention: Patch coverage is 4.92147% with 908 lines in your changes missing coverage. Please review.

Project coverage is 0.05%. Comparing base (95f369e) to head (de4f491).

Files	Patch %	Lines
pkg/authentication/authenticate.go	0.00%	121 Missing :warning:
pkg/client/zitadel/auth/auth_grpc.pb.go	0.00%	106 Missing :warning:
pkg/client/zitadel/instance/instance.pb.go	0.00%	78 Missing :warning:
...client/zitadel/user/v2beta/user_service_grpc.pb.go	0.00%	68 Missing :warning:
pkg/client/client.go	0.00%	67 Missing :warning:
pkg/authentication/oidc/authenticate.go	0.00%	50 Missing :warning:
pkg/client/zitadel/system/system_grpc.pb.go	0.00%	48 Missing :warning:
pkg/client/auth.go	0.00%	40 Missing :warning:
pkg/grpc/middleware/authz.go	0.00%	31 Missing :warning:
pkg/authorization/oauth/context.go	0.00%	29 Missing :warning:
... and 27 more

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #363 +/- ## ======================================== + Coverage 0.00% 0.05% +0.05% ======================================== Files 76 91 +15 Lines 78068 78928 +860 ======================================== + Hits 0 47 +47 - Misses 78068 78878 +810 - Partials 0 3 +3 ```

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[muhlemmer]

As next dropped support for go <1.21 we need to disable the test requirement for v1.20

[muhlemmer]

@adlerhurst

not sure if the code for the NewClient functions would get more readable if we would use a helper function instead of copy pasting the code.

Instead of the protoc stuff in the build/zitadel folder would it make builds easier if we switch to buf?

I agree. But such a change should be formalized in a user-story and planned. The scope of this PR is merging the current state of next into main, which was neglected for quite some months now.

[github-actions[bot]]

:tada: This PR is included in version 2.3.0 :tada:

The release is available on GitHub release

Your semantic-release bot :package::rocket: