Bump brave-bom from 5.12.3 to 5.12.7

Bumps [brave-bom](https://github.com/openzipkin/brave) from 5.12.3 to 5.12.7. - [Release notes](https://github.com/openzipkin/brave/releases) - [Changelog](https://github.com/openzipkin/brave/blob/master/RELEASE.md) - [Commits](openzipkin/brave@5.12.3...5.12.7) Signed-off-by: dependabot-preview[bot] <support@dependabot.com>

Author: dependabot-preview[bot]

spring-cloud-sleuth-dependencies/pom.xml

@@ -31,7 +31,7 @@
 <name>spring-cloud-sleuth-dependencies</name>
 <description>Spring Cloud Sleuth Dependencies</description>
 <properties>
-<brave.version>5.12.3</brave.version>
+<brave.version>5.12.7</brave.version>
 <brave.opentracing.version>0.37.2</brave.opentracing.version>
 <grpc.spring.boot.version>4.0.0</grpc.spring.boot.version>
 <opentelemetry.version>0.9.1</opentelemetry.version>