Bump org.apache.logging.log4j:log4j-core

Bumps org.apache.logging.log4j:log4j-core from 2.19.0 to 2.25.3.

Resolves #1323
---
updated-dependencies:
- dependency-name: org.apache.logging.log4j:log4j-core
  dependency-version: 2.25.3
  dependency-type: direct:production
...

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Author: dependabot[bot]

spring-cloud-function-adapters/spring-cloud-function-serverless-web/sample/pet-store/pom.xml

@@ -28,7 +28,7 @@
         <maven.compiler.target>1.8</maven.compiler.target>
         <spring.version>5.3.25</spring.version>
         <junit.version>4.13.2</junit.version>
-        <log4j.version>2.19.0</log4j.version>
+        <log4j.version>2.25.3</log4j.version>
     </properties>
 
     <dependencies>