Bump micrometer-registry-prometheus from 1.6.4 to 1.6.5 (#93)

Bumps [micrometer-registry-prometheus](https://github.com/micrometer-metrics/micrometer) from 1.6.4 to 1.6.5.
- [Release notes](https://github.com/micrometer-metrics/micrometer/releases)
- [Commits](micrometer-metrics/micrometer@v1.6.4...v1.6.5)

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

molten-spring-boot/pom.xml

@@ -81,7 +81,7 @@
     <dependency>
       <groupId>io.micrometer</groupId>
       <artifactId>micrometer-registry-prometheus</artifactId>
-      <version>1.6.4</version>
+      <version>1.6.5</version>
       <scope>test</scope>
     </dependency>
     <dependency>