Bump swagger.version from 2.1.8 to 2.1.9 (#1042)
Bump swagger.version from 2.1.8 to 2.1.9 (#1042)

Bumps `swagger.version` from 2.1.8 to 2.1.9.

Updates `swagger-core` from 2.1.8 to 2.1.9
- [Release notes](https://github.com/swagger-api/swagger-core/releases)
- [Commits](https://github.com/swagger-api/swagger-core/compare/v2.1.8...v2.1.9)

Updates `swagger-jaxrs2` from 2.1.8 to 2.1.9

Updates `swagger-integration` from 2.1.8 to 2.1.9

Signed-off-by: dependabot[bot] <support@github.com>

Co-authored-by: dependabot[bot] <1c358da00a777d4e9898c1280ab801e2df165188@users.noreply.github.com>
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