ci(dependabot): ignore major bumps for pinned deps

@types/node stays on the Node LTS major we run (24). React (and its types)
stays on 18 until Nextra is upgraded, since Nextra 2 breaks on React 19.

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

Author: mkrtchian

.github/dependabot.yml

@@ -9,3 +9,17 @@ updates:
       # Stay on v6 while we use Nextra 2.x.
       - dependency-name: "next-seo"
         update-types: ["version-update:semver-major"]
+      # @types/node tracks the Node major it describes. Keep it on the Node LTS
+      # major we run (24); a higher major would type APIs missing at runtime.
+      - dependency-name: "@types/node"
+        update-types: ["version-update:semver-major"]
+      # React stays on 18: Nextra 2 pins @headlessui/react@1.7.14, which breaks
+      # the build on React 19. Drop these once Nextra is upgraded.
+      - dependency-name: "react"
+        update-types: ["version-update:semver-major"]
+      - dependency-name: "react-dom"
+        update-types: ["version-update:semver-major"]
+      - dependency-name: "@types/react"
+        update-types: ["version-update:semver-major"]
+      - dependency-name: "@types/react-dom"
+        update-types: ["version-update:semver-major"]