Temp block ESLint major version bumps (#202)

`eslint-plugin-github` doesn't support v10 yet, so we are blocking major bumps until then.

github/axe-github#304 (comment)

Author: lindseywild

.github/dependabot.yml

@@ -4,6 +4,10 @@ updates:
     directory: "/"
     schedule:
       interval: weekly
+    # TODO: Allow `eslint` to update to version 10 after `eslint-plugin-github` updates with support for v10 too
+    ignore:
+      - dependency-name: "eslint"
+        update-types: ["version-update:semver-major"]
     groups:
       all-dependencies:
         patterns:
@@ -23,4 +27,4 @@ updates:
           - "*"
         update-types:
           - "minor"
-          - "patch"
+          - "patch"