chore(deps): Update dependencies

[reneleonhardt]

Updates

• Update Go dependencies (4 years of technical debt, fixes high and medium CVEs)
• Let Dependabot update Go dependencies and GitHub Actions

Module	Required	Update	Old	New	Debt	Type
github.com/gin-gonic/gin	v1.8.1	v1.8.2	2022-06-06	2022-12-22	199 days	patch
github.com/gin-gonic/gin	v1.8.1	v1.10.0	2022-06-06	2024-05-07	701 days	minor
github.com/invopop/jsonschema	v0.12.0	v0.13.0	2023-10-04	2024-12-31	454 days	minor
github.com/stretchr/testify	v1.9.0	v1.10.0	2024-02-29	2024-11-12	257 days	minor
Technical Debt	Patch	199 days (1 years)	Minor	1,412 days (4 years)

TODO

Go version requirements seem confusing to me and make updating not easier 😅

Where	Versions	Code
Documented	1.19	https://github.com/metoro-io/mcp-golang/blob/main/docs/contributing.mdx?plain=1#L15
go.mod	1.21	https://github.com/metoro-io/mcp-golang/blob/main/go.mod#L3
Tested + released	1.23	https://github.com/metoro-io/mcp-golang/blob/main/.github/workflows/goreleaser.yml#L23

I would be great if all these versions could be clarified or even streamlined.
My suggestions:

• Tested should be 1.23 and 1.24 (the only supported Go versions https://go.dev/doc/devel/release)
• Released should be 1.24