pre-commit: add check-case-conflict and check-merge-conflict (#117259)

Author: hugovk

.pre-commit-config.yaml

@@ -1,6 +1,6 @@
 repos:
   - repo: https://github.com/astral-sh/ruff-pre-commit
-    rev: v0.2.0
+    rev: v0.3.4
     hooks:
       - id: ruff
         name: Run Ruff on Lib/test/
@@ -14,6 +14,8 @@ repos:
   - repo: https://github.com/pre-commit/pre-commit-hooks
     rev: v4.5.0
     hooks:
+      - id: check-case-conflict
+      - id: check-merge-conflict
       - id: check-toml
         exclude: ^Lib/test/test_tomllib/
       - id: check-yaml