Add pre-commit hook check-json

https://github.com/pre-commit/pre-commit-hooks?tab=readme-ov-file#check-json

Adds another check/test to our pre-commit framework for checking JSON files

We have one JSON file at `.github/linters/mlc_config.json`

.pre-commit-config.yaml

@@ -17,6 +17,7 @@ repos:
       - id: check-case-conflict
       - id: check-executables-have-shebangs
         exclude: ^test/t/lang\.rb$
+      - id: check-json
       - id: check-merge-conflict
       - id: check-shebang-scripts-are-executable
       - id: check-vcs-permalinks