Bump io.swagger.parser.v3:swagger-parser from 2.1.19 to 2.1.20

Bumps [io.swagger.parser.v3:swagger-parser](https://github.com/swagger-api/swagger-parser) from 2.1.19 to 2.1.20.
- [Release notes](https://github.com/swagger-api/swagger-parser/releases)
- [Commits](swagger-api/swagger-parser@v2.1.19...v2.1.20)

---
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] <support@github.com>

Author: dependabot[bot]

pom.xml

@@ -240,7 +240,7 @@
             <dependency>
                 <groupId>io.swagger.parser.v3</groupId>
                 <artifactId>swagger-parser</artifactId>
-                <version>2.1.19</version>
+                <version>2.1.20</version>
                 <exclusions>
                     <exclusion>
                         <groupId>javax.validation</groupId>