Bump feign-core from 12.3 to 12.4 (#1335)

Bumps [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] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

distribution/src/main/release/samples/jax_rs/tracing_opentracing/pom.xml

@@ -134,7 +134,7 @@
         <dependency>
             <groupId>io.github.openfeign</groupId>
             <artifactId>feign-core</artifactId>
-            <version>12.3</version>
+            <version>12.4</version>
         </dependency>
         <dependency>
             <groupId>io.github.openfeign</groupId>