Adds a dependabot.yml configuration that:
- Ignores @types/react and @types/node (need to match supported versions)
- Ignores packages with licensing issues (@elastic/elasticsearch, event-source-polyfill)
- Disables version update PRs (we use Renovate for that)
Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
Signed-off-by: Fredrik Adelöw <freben@gmail.com>