Bump io.dropwizard.metrics:metrics-core from 4.2.19 to 4.2.20 (#231)

Bumps [io.dropwizard.metrics:metrics-core](https://github.com/dropwizard/metrics) from 4.2.19 to 4.2.20.
- [Release notes](https://github.com/dropwizard/metrics/releases)
- [Commits](dropwizard/metrics@v4.2.19...v4.2.20)

---
updated-dependencies:
- dependency-name: io.dropwizard.metrics:metrics-core
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

pom.xml

@@ -110,7 +110,7 @@
       <dependency>
         <groupId>io.dropwizard.metrics</groupId>
         <artifactId>metrics-core</artifactId>
-        <version>4.2.19</version>
+        <version>4.2.20</version>
         <exclusions>
           <exclusion>
             <groupId>org.slf4j</groupId>