Update module github.com/bufbuild/buf to v1.29.0

[renovate]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
github.com/bufbuild/buf	v1.28.1 -> v1.29.0

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Release Notes

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

v1.29.0

Compare Source

• Add support for yaml format. All commands that take image inputs, output images,
  or convert between message formats, now take yaml as a format, in addition to
  the existing binpb and txtpb formats. Some examples:
  • buf build -o image.yaml
  • buf ls-files image.yaml
  • buf convert --type foo.Bar --from input.binpb --to output.yaml
• The yaml and json formats now accept two new options: use_proto_names and
  use_enum_numbers. This affects output serialization. Some examples:
  • buf convert --type foo.Bar --from input.binpb --to output.yaml#use_proto_names=true
  • buf convert --type foo.Bar --from input.binpb --to -#format=yaml,use_enum_numbers=true
• Fix issue where buf format would inadvertently mangle files that used
  the expanded Any syntax
  in option values.

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