MINOR: [Java] Bump dep.slf4j.version from 2.0.11 to 2.0.12 in /java

Bumps `dep.slf4j.version` from 2.0.11 to 2.0.12.

Updates `org.slf4j:jcl-over-slf4j` from 2.0.11 to 2.0.12

Updates `org.slf4j:slf4j-api` from 2.0.11 to 2.0.12

Updates `org.slf4j:slf4j-jdk14` from 2.0.11 to 2.0.12

Updates `org.slf4j:jul-to-slf4j` from 2.0.11 to 2.0.12

Updates `org.slf4j:log4j-over-slf4j` from 2.0.11 to 2.0.12

---
updated-dependencies:
- dependency-name: org.slf4j:jcl-over-slf4j
  dependency-type: direct:development
  update-type: version-update:semver-patch
- dependency-name: org.slf4j:slf4j-api
  dependency-type: direct:production
  update-type: version-update:semver-patch
- dependency-name: org.slf4j:slf4j-jdk14
  dependency-type: direct:production
  update-type: version-update:semver-patch
- dependency-name: org.slf4j:jul-to-slf4j
  dependency-type: direct:development
  update-type: version-update:semver-patch
- dependency-name: org.slf4j:log4j-over-slf4j
  dependency-type: direct:development
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <support@github.com>

java/maven/pom.xml

@@ -240,7 +240,7 @@
           <dependency>
             <groupId>org.slf4j</groupId>
             <artifactId>jcl-over-slf4j</artifactId>
-            <version>2.0.11</version>
+            <version>2.0.12</version>
           </dependency>
         </dependencies>
         <executions>

java/pom.xml

@@ -31,7 +31,7 @@
     <target.gen.source.path>${project.build.directory}/generated-sources</target.gen.source.path>
     <dep.junit.platform.version>1.9.0</dep.junit.platform.version>
     <dep.junit.jupiter.version>5.10.2</dep.junit.jupiter.version>
-    <dep.slf4j.version>2.0.11</dep.slf4j.version>
+    <dep.slf4j.version>2.0.12</dep.slf4j.version>
     <dep.guava-bom.version>33.0.0-jre</dep.guava-bom.version>
     <dep.netty-bom.version>4.1.108.Final</dep.netty-bom.version>
     <dep.grpc-bom.version>1.63.0</dep.grpc-bom.version>