Upgrade com.gradle.enterprise plugin to 3.16.2

[qeeqez]

Upgrade Enterprise Gradle Plugin

Bumps

• com.gradle.enterprise from 3.12.6 to 3.16.2
• io.spring.ge.conventions from 0.0.13 to 0.0.15

Compatibility

Based on commits in spring-framework repo, internally spring team should support latest Gradle Enterprise plugin:

• Commit with note that only 3.15 version is supported: spring-projects/spring-framework@e3f185a696b0d6ca017a83366f24ed692573d14e
• Commit with 3.16 version: spring-projects/spring-framework@b7e4fa16cae5f5a45fd661c51d558c8b9e5c39ae

[sdeleuze]

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[snicoll]

This has been fixed by #62 in the meantime.

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