chore(deps): bump openapi-mcp-server in /examples/servers/weather-alerts

Bumps openapi-mcp-server from 1.2.0-beta05 to 2.0.3.

---
updated-dependencies:
- dependency-name: openapi-mcp-server
  dependency-version: 2.0.3
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]