Bump io.github.openfeign:feign-core from 12.3 to 12.4

Bumps [io.github.openfeign:feign-core](https://github.com/openfeign/feign) from 12.3 to 12.4.
- [Release notes](https://github.com/openfeign/feign/releases)
- [Changelog](https://github.com/OpenFeign/feign/blob/master/CHANGELOG.md)
- [Commits](OpenFeign/feign@12.3...12.4)

---
updated-dependencies:
- dependency-name: io.github.openfeign:feign-core
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

build.gradle

@@ -59,7 +59,7 @@ subprojects {
         dropwizardVersion = '2.1.0'
         dropwizardWebsocketsVersion = '1.3.14'
         equalsVerifierVersion = '3.14.3'
-        feignCoreVersion = '12.3'
+        feignCoreVersion = '12.4'
         feignGsonVersion = '12.3'
         javaWebSocketVersion = '1.5.3'
         gsonVersion = '2.10.1'