Update slf4j monorepo to v2.0.14

Author: renovate[bot]

pom.xml

@@ -67,7 +67,7 @@
         <netcdf4.version>5.6.0</netcdf4.version>
         <logback.version>1.5.6</logback.version>
         <lucene.version>9.11.1</lucene.version>
-        <slf4j.version>2.0.13</slf4j.version>
+        <slf4j.version>2.0.14</slf4j.version>
         <netex-java-model.version>2.0.15</netex-java-model.version>
         <siri-java-model.version>1.27</siri-java-model.version>
         <jaxb-runtime.version>4.0.5</jaxb-runtime.version>