Bump io.swagger.parser.v3:swagger-parser from 2.1.20 to 2.1.21 (eclip…

…se-dirigible#3554)

Bumps [io.swagger.parser.v3:swagger-parser](https://github.com/swagger-api/swagger-parser) from 2.1.20 to 2.1.21.
- [Release notes](https://github.com/swagger-api/swagger-parser/releases)
- [Commits](swagger-api/swagger-parser@v2.1.20...v2.1.21)

---
updated-dependencies:
- dependency-name: io.swagger.parser.v3:swagger-parser
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

components/engine/engine-openapi/pom.xml

@@ -33,7 +33,7 @@
         <dependency>
             <groupId>io.swagger.parser.v3</groupId>
             <artifactId>swagger-parser</artifactId>
-            <version>2.1.20</version>
+            <version>2.1.21</version>
             <exclusions>
             	<exclusion>
             		<groupId>javax.validation</groupId>