ci: handle independent go module versions for integrations

[giortzisg]

Description

Decouple integration Go versions from the main SDK so each module can require a newer Go version when its upstream dependencies demand it.

All Makefile targets (build, vet, test/%, test-coverage, test-race-coverage) now read each module's go directive and skip modules that require a newer Go than the current toolchain. The mod-tidy target reads each module's go directive instead of hardcoding 1.24.0, so it works correctly for modules with different minimum versions.

CI runs mod-tidy on the most recent go version, to tidy modules that don't require the minimum supported version of the main sdk. No other CI changes needed — the Makefile handles skipping automatically.

As a first use of this, bumps echo/go.mod from go 1.24.0 to go 1.25.0 to prepare for the Echo v5 upgrade (#1183).

Refs #1183

Issues

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Reminders

• Add GH Issue ID & Linear ID
• PR title should use conventional commit style (feat:, fix:, ref:, meta:)
• For external contributors: CONTRIBUTING.md, Sentry SDK development docs, Discord community

[github-actions]

Semver Impact of This PR

🟢 Patch (bug fixes)

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New Features ✨

• Add the option to set attributes on the scope by giortzisg in #1208

Internal Changes 🔧

Deps

• Bump getsentry/craft from 2.20.1 to 2.23.1 by dependabot in #1213
• Bump github.com/gofiber/fiber/v2 from 2.52.11 to 2.52.12 in /fiber by dependabot in #1209

Other

• (ai) Add dotagents configuration by giortzisg in #1211

• Handle independent go module versions for integrations by giortzisg in #1217

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[dingsdax]

I was wondering, why is that a Makefile? Is there a reason? Or would something like https://magefile.org/ or a small cmd/build/main.go also work?

[giortzisg]

Mostly trying to keep dependencies for the runners to the minimum. I can open another issue for adding an entrypoint and making it more idiomatic.