Language grammar dependencies in go.mod pollute downstream go.sum files

[kevinmorio]

The README states:

By default, none of the grammars are included in this package. This way, you can only bring in what you need.

However, the go.mod file lists all language grammars as direct dependencies:

  github.com/tree-sitter/tree-sitter-c v0.23.4
  github.com/tree-sitter/tree-sitter-cpp v0.23.4
  github.com/tree-sitter/tree-sitter-embedded-template v0.23.2
  github.com/tree-sitter/tree-sitter-go v0.23.4
  github.com/tree-sitter/tree-sitter-html v0.23.2
  github.com/tree-sitter/tree-sitter-java v0.23.5
  github.com/tree-sitter/tree-sitter-javascript v0.23.1
  github.com/tree-sitter/tree-sitter-json v0.24.8
  github.com/tree-sitter/tree-sitter-php v0.23.11
  github.com/tree-sitter/tree-sitter-python v0.23.6
  github.com/tree-sitter/tree-sitter-ruby v0.23.1
  github.com/tree-sitter/tree-sitter-rust v0.23.2

These are presumably used for testing, but because they're in go.mod, they end up in the go.sum of every downstream project that depends on go-tree-sitter, even if the project only uses its own custom grammar.

Expected behavior:

Projects that only depend on the core go-tree-sitter binding should not have language grammar checksums in their go.sum.