chore: update pre-commit hooks (#81)

updates:
- [github.com/astral-sh/ruff-pre-commit: v0.6.7 → v0.6.8](astral-sh/ruff-pre-commit@v0.6.7...v0.6.8)
- [github.com/abravalheri/validate-pyproject: v0.19 → v0.20.2](abravalheri/validate-pyproject@v0.19...v0.20.2)

Co-authored-by: pre-commit-ci[bot] <66853113+pre-commit-ci[bot]@users.noreply.github.com>

.pre-commit-config.yaml

@@ -51,7 +51,7 @@ repos:
     -   id: trailing-whitespace
 
 -   repo: https://github.com/astral-sh/ruff-pre-commit
-    rev: "v0.6.7"
+    rev: "v0.6.8"
     hooks:
     -   id: ruff
         types: [file, python]
@@ -86,7 +86,7 @@ repos:
 
 -   repo: https://github.com/abravalheri/validate-pyproject
     # More exhaustive than Ruff RUF200.
-    rev: "v0.19"
+    rev: "v0.20.2"
     hooks:
     - id: validate-pyproject