0.1.15: Incomaptible with Java 8

[perok]

Build fails with the following error:

FAILURE: Build failed with an exception.

* What went wrong:
A problem occurred configuring root project 'sg-ff2-parent'.
> Could not resolve all artifacts for configuration ':classpath'.
   > Could not resolve com.github.psxpaul:gradle-execfork-plugin:0.1.15.
     Required by:
         project : > com.github.psxpaul.execfork:com.github.psxpaul.execfork.gradle.plugin:0.1.15
      > No matching variant of com.github.psxpaul:gradle-execfork-plugin:0.1.15 was found. The consumer was configured to find a runtime of a library compatible with Java 8, packaged as a jar, and its dependencies declared externally, as well as attribute 'org.gradle.plugin.api-version' with value '7.0' but:
          - Variant 'apiElements' capability com.github.psxpaul:gradle-execfork-plugin:0.1.15 declares a library, packaged as a jar, and its dependencies declared externally:
              - Incompatible because this component declares an API of a component compatible with Java 11 and the consumer needed a runtime of a component compatible with Java 8
              - Other compatible attribute:
                  - Doesn't say anything about org.gradle.plugin.api-version (required '7.0')
          - Variant 'runtimeElements' capability com.github.psxpaul:gradle-execfork-plugin:0.1.15 declares a runtime of a library, packaged as a jar, and its dependencies declared externally:
              - Incompatible because this component declares a component compatible with Java 11 and the consumer needed a component compatible with Java 8
              - Other compatible attribute:
                  - Doesn't say anything about org.gradle.plugin.api-version (required '7.0')

Might be an issue similiar to JetBrains/markdown#70 ?