Bump up micrometer to 1.5.5 to 1.5.4 (#152)

* Update dependencies

* Do not update micronaut test

Co-authored-by: Iván López <lopezi@objectcomputing.com>

Author: micronaut-build

gradle.properties

@@ -12,7 +12,7 @@ projectUrl=http://micronaut.io
 githubSlug=micronaut-projects/micronaut-micrometer
 developers=Graeme Rocher
 
-micrometerVersion=1.5.4
+micrometerVersion=1.5.5
 validationVersion=2.0.1.Final
 jcacheVersion=1.1.1
 nettyVersion=4.1.48.Final