Bump Gradle Wrapper from 9.2.0 to 9.2.1.

Release notes of Gradle 9.2.1 can be found here:
https://docs.gradle.org/9.2.1/release-notes.html

Signed-off-by: bot-githubaction <bot-githubaction@gradle.com>

.github/workflow-samples/gradle-plugin/gradle/wrapper/gradle-wrapper.properties

@@ -1,7 +1,7 @@
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
-distributionSha256Sum=df67a32e86e3276d011735facb1535f64d0d88df84fa87521e90becc2d735444
+distributionSha256Sum=72f44c9f8ebcb1af43838f45ee5c4aa9c5444898b3468ab3f4af7b6076c5bc3f
-distributionUrl=https\://services.gradle.org/distributions/gradle-9.2.0-bin.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-9.2.1-bin.zip
 networkTimeout=10000
 validateDistributionUrl=true
 zipStoreBase=GRADLE_USER_HOME

sources/src/wrapper-validation/wrapper-checksums.json

@@ -1,20 +1,4 @@
 [
-  {
-    "version": "9.4.0-milestone-2",
-    "checksum": "b3a875ddc1f044746e1b1a55f645584505f4a10438c1afea9f15e92a7c42ec13"
-  },
-  {
-    "version": "9.4.0-milestone-1",
-    "checksum": "b3a875ddc1f044746e1b1a55f645584505f4a10438c1afea9f15e92a7c42ec13"
-  },
-  {
-    "version": "9.2.1",
-    "checksum": "423cb469ccc0ecc31f0e4e1c309976198ccb734cdcbb7029d4bda0f18f57e8d9"
-  },
-  {
-    "version": "9.3.0-milestone-1",
-    "checksum": "d652a0436e78e0cd4d00f52057fcf2179163762a71a02370ec7623ab8f84c334"
-  },
   {
     "version": "9.2.0",
     "checksum": "423cb469ccc0ecc31f0e4e1c309976198ccb734cdcbb7029d4bda0f18f57e8d9"