[CALCITE-3742] Update Gradle: 6.0.1 -> 6.1
diff --git a/gradle/wrapper/gradle-wrapper.properties b/gradle/wrapper/gradle-wrapper.properties
index a10a604..acaf2fb 100644
--- a/gradle/wrapper/gradle-wrapper.properties
+++ b/gradle/wrapper/gradle-wrapper.properties
@@ -16,7 +16,7 @@
 #
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
-distributionSha256Sum=6f6cfdbb12a577c3845522a1c7fbfe1295ea05d87edabedd4e23fd2bf02b88b1
-distributionUrl=https\://services.gradle.org/distributions/gradle-6.0.1-all.zip
+distributionSha256Sum=634f972af958e3c753aeb42d7a688fab6820b527a0aef9eed03d7f3f6f9c7c06
+distributionUrl=https\://services.gradle.org/distributions/gradle-6.1-all.zip
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists