Bump Gradle Wrapper from 9.3.1 to 9.4.0.

Release notes of Gradle 9.4.0 can be found here:
https://docs.gradle.org/9.4.0/release-notes.html

Signed-off-by: github-actions[bot] <github-actions[bot]@users.noreply.github.com>

Author: github-actions[bot]

blog/posts/bootiful-builds-best-practices-spring-boot-gradle/example-mightycon/gradle/wrapper/gradle-wrapper.jar

@@ -1,7 +1,7 @@
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
-distributionSha256Sum=b266d5ff6b90eada6dc3b20cb090e3731302e553a27c5d3e4df1f0d76beaff06
-distributionUrl=https\://services.gradle.org/distributions/gradle-9.3.1-bin.zip
+distributionSha256Sum=60ea723356d81263e8002fec0fcf9e2b0eee0c0850c7a3d7ab0a63f2ccc601f3
+distributionUrl=https\://services.gradle.org/distributions/gradle-9.4.0-bin.zip
 networkTimeout=10000
 validateDistributionUrl=true
 zipStoreBase=GRADLE_USER_HOME