chore(deps): update module github.com/bufbuild/buf to v1.39.0

[renovate]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
github.com/bufbuild/buf	v1.38.0 -> v1.39.0

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Release Notes

bufbuild/buf (github.com/bufbuild/buf)

v1.39.0

Compare Source

• Fix git input handling of relative HEAD refs without branch names.
• Add includes key to module configurations in v2 buf.yaml, accepting a list of directories.
  • If includes is specified, a proto file is considered in the module only if it is in one of the
    directories specified.
  • If both includes and excludes keys are specified for a module, a proto file is considered
    part of this module if it is contained in any of the include paths and not in any of the exclude
    paths.
• Allow multiple module configurations in the same v2 buf.yaml to have the same directory path.

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