Bump org.slf4j:slf4j-simple from 2.0.14 to 2.0.15

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

---
updated-dependencies:
- dependency-name: org.slf4j:slf4j-simple
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

build.gradle.kts

@@ -29,7 +29,7 @@ dependencies {
     testImplementation("org.mockito:mockito-junit-jupiter:5.12.0")
 
     testRuntimeOnly("org.junit.platform:junit-platform-launcher")
-    testRuntimeOnly("org.slf4j:slf4j-simple:2.0.14")
+    testRuntimeOnly("org.slf4j:slf4j-simple:2.0.15")
 }
 
 tasks.named<Test>("test") {
@@ -55,7 +55,7 @@ testing {
                 implementation("org.mockito:mockito-junit-jupiter:5.12.0")
 
                 runtimeOnly("org.junit.jupiter:junit-jupiter-engine:$junitVersion")
-                runtimeOnly("org.slf4j:slf4j-simple:2.0.14")
+                runtimeOnly("org.slf4j:slf4j-simple:2.0.15")
             }
         }
         register<JvmTestSuite>("integrationTest") {