Bump org.apache.logging.log4j:log4j-to-slf4j from 2.25.3 to 2.25.4 (#354)

Bumps org.apache.logging.log4j:log4j-to-slf4j from 2.25.3 to 2.25.4.

---
updated-dependencies:
- dependency-name: org.apache.logging.log4j:log4j-to-slf4j
  dependency-version: 2.25.4
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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Author: dependabot[bot]

build.gradle

@@ -53,7 +53,7 @@ dependencies {
     testImplementation 'org.nanohttpd:nanohttpd:2.3.1'
     testImplementation 'org.mockito:mockito-core:4.11.0'
     testRuntimeOnly "org.slf4j:slf4j-simple:$slf4jVersion"
-    testRuntimeOnly 'org.apache.logging.log4j:log4j-to-slf4j:2.25.3'
+    testRuntimeOnly 'org.apache.logging.log4j:log4j-to-slf4j:2.25.4'
 }
 
 test {