Bump org.slf4j:slf4j-api from 2.0.14 to 2.0.15 (#977)

Bumps org.slf4j:slf4j-api from 2.0.14 to 2.0.15.

---
updated-dependencies:
- dependency-name: org.slf4j:slf4j-api
  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>

planetiler-core/pom.xml

@@ -77,7 +77,7 @@
     <dependency>
       <groupId>org.slf4j</groupId>
       <artifactId>slf4j-api</artifactId>
-      <version>2.0.14</version>
+      <version>2.0.15</version>
     </dependency>
     <dependency>
       <groupId>org.apache.logging.log4j</groupId>