Change tree-sitter parser for Git commit message files

The gbprod grammar is more complete and featureful than mine, and more
actively maintained. I will archive my tree-sitter-git-commit in favor
of gbprod's.

The new queries are based on the ones in the repo upstream but I
modified them to look similar to the highlights before this commit.

Also I've updated the tab-width so that change nodes in the generated
message are indented correctly.

languages.toml

@@ -1859,13 +1859,14 @@ name = "git-commit"
 scope = "git.commitmsg"
 file-types = [{ glob = "COMMIT_EDITMSG" }, { glob = "MERGE_MSG" }]
 comment-token = "#"
-indent = { tab-width = 2, unit = "  " }
+indent = { tab-width = 4, unit = "    " }
 rulers = [51, 73]
 text-width = 72
+grammar = "gitcommit"
 
 [[grammar]]
-name = "git-commit"
-source = { git = "https://github.com/the-mikedavis/tree-sitter-git-commit", rev = "6f193a66e9aa872760823dff020960c6cedc37b3" }
+name = "gitcommit"
+source = { git = "https://github.com/gbprod/tree-sitter-gitcommit", rev = "a716678c0f00645fed1e6f1d0eb221481dbd6f6d" }
 
 [[language]]
 name = "diff"

runtime/queries/git-commit/highlights.scm

@@ -1,18 +1,18 @@
+[(comment) (generated_comment) (scissor)] @comment
 (subject) @markup.heading
-(path) @string.special.path
 (branch) @string.special.symbol
-(commit) @constant
-(item) @markup.link.url
-(header) @tag
+(filepath) @string.special.path
+(arrow) @punctuation.delimiter
+(subject (subject_prefix) @function)
+(prefix (type) @keyword)
+(prefix (scope) @variable.parameter)
+(prefix [ "(" ")" ":" ] @punctuation.delimiter)
+(prefix "!" @punctuation.special)
+(trailer (token) @variable.other.member)
+(trailer (value) @string)
+(breaking_change (token) @special)
 
-(change kind: "new file" @diff.plus)
-(change kind: "deleted" @diff.minus)
-(change kind: "modified" @diff.delta)
-(change kind: "renamed" @diff.delta.moved)
-
-(trailer
-  key: (trailer_key) @variable.other.member
-  value: (trailer_value) @string)
-
-[":" "=" "->" (scissors)] @punctuation.delimiter
-(comment) @comment
+(change kind: (new)) @diff.plus
+(change kind: (deleted)) @diff.minus
+(change kind: (modified)) @diff.delta
+(change kind: [(renamed) (typechange)]) @diff.delta.moved

runtime/queries/git-commit/injections.scm

@@ -1,6 +1,4 @@
-(((scissors)
-  (message) @injection.content)
- (#set! injection.include-children)
+((diff) @injection.content
  (#set! injection.language "diff"))
 
 ((rebase_command) @injection.content