fix(deps): update golang dependencies

[renovate[bot]]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
github.com/xanzy/go-gitlab	v0.101.0 -> v0.103.0
golang.org/x/oauth2	v0.18.0 -> v0.19.0

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Release Notes

xanzy/go-gitlab (github.com/xanzy/go-gitlab)

### [`v0.103.0`](https://togithub.com/xanzy/go-gitlab/compare/v0.102.0...v0.103.0) [Compare Source](https://togithub.com/xanzy/go-gitlab/compare/v0.102.0...v0.103.0) ### [`v0.102.0`](https://togithub.com/xanzy/go-gitlab/compare/v0.101.0...v0.102.0) [Compare Source](https://togithub.com/xanzy/go-gitlab/compare/v0.101.0...v0.102.0)

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