git-commit: fix highlight edge cases

* branch message with current branch and diverged branch has been
  added to the parser
* scissors used in verbose commits are marked as a punctuation
  delimiter
    * we could use comment instead since they're visually the
      same but IMO this works better

languages.toml

@@ -908,7 +908,7 @@ indent = { tab-width = 2, unit = "  " }
 
 [[grammar]]
 name = "git-commit"
-source = { git = "https://github.com/the-mikedavis/tree-sitter-git-commit", rev = "7ae23de633de41f8f5b802f6f05b6596df6d00c1" }
+source = { git = "https://github.com/the-mikedavis/tree-sitter-git-commit", rev = "318dd72abfaa7b8044c1d1fbeabcd06deaaf038f" }
 
 [[language]]
 name = "git-diff"

runtime/queries/git-commit/highlights.scm

@@ -10,5 +10,5 @@
 (change kind: "modified" @diff.delta)
 (change kind: "renamed" @diff.delta.moved)
 
-[":" "->"] @punctuation.delimeter
+[":" "->" (scissors)] @punctuation.delimeter
 (comment) @comment