Lint github actions and dependabot.yml

Taken from python/cpython@dcda92f

Author: sobolevn

.pre-commit-config.yaml

@@ -15,5 +15,18 @@ repos:
     hooks:
       - id: ruff
         args: [--exit-non-zero-on-fix]
+  - repo: https://github.com/python-jsonschema/check-jsonschema
+    rev: 0.29.4
+    hooks:
+      - id: check-dependabot
+      - id: check-github-workflows
+  - repo: https://github.com/rhysd/actionlint
+    rev: v1.7.3
+    hooks:
+      - id: actionlint
+        args: [
+          # -ignore=1st argument of function call is not assignable,
+          # -ignore=SC2(015|038|086|091|097|098|129|155),
+        ]
 ci:
   autoupdate_schedule: quarterly