fix(deps): bump org.apache.logging.log4j minimum version to 2.25.5 (GHSA-qv9r-c865-cp47) (#405)

Force log4j-api and log4j-core to >= 2.25.5 to resolve Dependabot alert #133.
Adds resolutionStrategy override in root build.gradle and ext[] lockstep
in both Spring Boot example modules to account for BOM re-assertion.

Co-authored-by: Claude <noreply@anthropic.com>
Co-authored-by: Catarina Pinheiro Correia <catarina.correia@getyourguide.com>

Author: 3 people

build.gradle

@@ -63,6 +63,11 @@ subprojects {
                 useVersion('7.0.8')
                 because('GHSA-659m-px2c-25wj: Denial of Service in spring-core via AntPathMatcher, fixed in 7.0.8')
             }
+            if (requested.group == 'org.apache.logging.log4j'
+                    && requested.version != null && requested.version < '2.25.5') {
+                useVersion('2.25.5')
+                because('GHSA-qv9r-c865-cp47: improper encoding of non-finite floating-point values during MapMessage JSON serialization, fixed in 2.25.5')
+            }
         }
     }
 

examples/example-spring-boot-starter-web/build.gradle

@@ -8,6 +8,7 @@ plugins {
 ext['jackson-bom.version'] = '3.1.4'
 ext['jackson-2-bom.version'] = '2.21.5'
 ext['logback.version'] = '1.5.34'
+ext['log4j2.version'] = '2.25.5'
 ext['netty.version'] = '4.2.17.Final'
 ext['tomcat.version'] = '11.0.22'
 ext['spring-framework.version'] = '7.0.8'

examples/example-spring-boot-starter-webflux/build.gradle

@@ -8,6 +8,7 @@ plugins {
 ext['jackson-bom.version'] = '3.1.4'
 ext['jackson-2-bom.version'] = '2.21.5'
 ext['logback.version'] = '1.5.34'
+ext['log4j2.version'] = '2.25.5'
 ext['netty.version'] = '4.2.17.Final'
 ext['tomcat.version'] = '11.0.22'
 ext['spring-framework.version'] = '7.0.8'