Bump org.gradle:gradle-core

Bumps org.gradle:gradle-core from 3.0 to 6.0.

---
updated-dependencies:
- dependency-name: org.gradle:gradle-core
  dependency-type: direct:production
...

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Author: dependabot[bot]

spring-cloud-function-adapters/spring-cloud-function-aws-gradle-parent/spring-cloud-function-aws-packaging-gradle-plugin/pom.xml

@@ -38,7 +38,7 @@
 		<dependency>
 			<groupId>org.gradle</groupId>
 			<artifactId>gradle-core</artifactId>
-			<version>3.0</version>
+			<version>6.0</version>
 			<scope>provided</scope>
 		</dependency>