Changes since last release (https://github.com/github/linguist/compare/v7.11.1...v7.12.0):

• Add support for Lark grammar files (#5049)
• Add Genie samples and improve heuristics (#5021)
• Improve accuracy of ActionScript heuristic (#4926)
• Restrict Vim help file pattern to a single line (#5055)
• Update tokenizer to flex 2.6.4 (#5006)
• Tokenizer: avoid intermediate string copies (#5065)
• Ensure that all heuristic tests consume samples (#5056)
• Switch F# grammar to ionide-fsgrammar (#5011)
• Add LabVIEW file extensions and samples (#5035)
• Mark .{1..9} as generic file-extensions (#5059)
• Add support for NWScript (#5064)
• Fix verilog misclassification (resurrection of #4751) (#5075)
• Move generic extensions list to a dedicated file (#5070)
• Add LEEx Support (#5040)
• Add ReScript programming language (#4975)
• Add devcontainer.json to JSONC (#5081)

... and an update to the latest version of all grammars.