Update Gradle to v9

build.gradle

@@ -90,7 +90,7 @@ repositories {
 
 dependencies {
     // Logging
-    api 'org.slf4j:slf4j-simple:2.0.18'
+    api 'org.slf4j:slf4j-simple:2.0.17'
 
     // Easy file management
     api 'commons-io:commons-io:2.22.0'
@@ -126,7 +126,7 @@ dependencies {
     api 'com.sun.mail:javax.mail:1.6.2'
 
     // Google Firebase Authentication backend
-    api 'com.google.firebase:firebase-admin:9.9.0'
+    api 'com.google.firebase:firebase-admin:9.8.0'
 
     // Connection Pool
     api 'com.mchange:c3p0:0.13.0'

gradle/wrapper/gradle-wrapper.properties

@@ -1,6 +1,6 @@
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-8.14.5-all.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-9.5.0-all.zip
 networkTimeout=10000
 validateDistributionUrl=true
 zipStoreBase=GRADLE_USER_HOME