deps: bump github.com/basecamp/actioncable-go from 1.1.0 to 1.2.0

[dependabot]

Bumps github.com/basecamp/actioncable-go from 1.1.0 to 1.2.0.

Release notes

Sourced from github.com/basecamp/actioncable-go's releases.

v1.2.0

What's Changed

• Type the transport's failures a caller acts on by @​monorkin in basecamp/actioncable-go#11

Full Changelog: basecamp/actioncable-client@v1.1.0...v1.2.0

Commits

• 0d02e57 Merge pull request #11 from basecamp/typed-transport-errors
• bc7c21c Type the transport's failures a caller acts on
• See full diff in compare view

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Summary by cubic

Bumps github.com/basecamp/actioncable-go from 1.1.0 to 1.2.0 so transport failures are now typed errors callers can act on, and refreshes the Nix vendorHash to match the new module set.

• Any code relying on the previous untyped error handling should be checked against the new typed transport error types.

^{Written for commit 83e1c76. Summary will update on new commits.}

[Copilot]

Copilot review overview

🟢 Approved

The valid minor dependency update is internally consistent and existing watch tests cover its integration surface.

Review effort: Balanced
Findings: None

What changed in this PR

Updates Action Cable transport handling to v1.2.0, enabling typed transport failures used by the watch infrastructure.

Changes:

• Bumps actioncable-go from v1.1.0 to v1.2.0.
• Updates module checksums.

[!TIP]
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File	Description
go.mod	Updates the direct dependency version.
go.sum	Updates checksums for v1.2.0.

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[jeremy]

This bumps the old module github.com/basecamp/actioncable-go. #485 replaces that module with github.com/basecamp/actioncable-client/go/v2 (v2.0.2), so this PR becomes obsolete once #485 merges, and Dependabot will close it then.

[dependabot]

OK, I won't notify you again about this release, but will get in touch when a new version is available. If you'd rather skip all updates until the next major or minor version, let me know by commenting @dependabot ignore this major version or @dependabot ignore this minor version. You can also ignore all major, minor, or patch releases for a dependency by adding an ignore condition with the desired update_types to your config file.

If you change your mind, just re-open this PR and I'll resolve any conflicts on it.