[.pre-commit-config.yaml]: Update

Updates:
* https://github.com/python-jsonschema/check-jsonschema
  from `0.28.6` to `0.29.0`.

Downgrades:
* https://github.com/psf/black-pre-commit-mirror
  from `24.4.2` to `23.12.1`.
* https://github.com/markdownlint/markdownlint
  from `v0.12.0` to `v0.9.0`.

Author: andthum

.pre-commit-config.yaml

@@ -108,7 +108,7 @@ repos:
       - id: "check-pre-commit-ci-config"
 
   - repo: "https://github.com/python-jsonschema/check-jsonschema"
-    rev: "0.28.6"
+    rev: "0.29.0"
     hooks:
       # Validate Dependabot Config (v2) against the schema provided by
       # SchemaStore.
@@ -162,8 +162,8 @@ repos:
 
   - repo: "https://github.com/psf/black-pre-commit-mirror"
     # Stay at black version 23, because some formatting rules change in
-    # version 24.
-    rev: "24.4.2"
+    # version 24.  Latest 23 version is 23.12.1.
+    rev: "23.12.1"
     hooks:
       # Format Python code with black.
       - id: "black"
@@ -264,7 +264,7 @@ repos:
     # v0.12.0 requires ruby2.7
     # v0.11.0 and v0.10.0 require ruby2.6
     # => stay at v0.9.0
-    rev: "v0.12.0"
+    rev: "v0.9.0"
     hooks:
       # Lint Markdown files with markdownlint.
       - id: "markdownlint"