transformXXX tasks are failing due to missing JDK9 toolchain

[fzhinkin]

After 589ad80, transformXXX Gradle tasks require JDK9 to run and it's not that trivial to find and set it up for MacOS/Aarch64. It would be nice to either setup auto-provisioning of some sort or relax the version requirement to use any JDK version higher or equal to 9.

Right now, build configuration fails with:

Configuration cache state could not be cached: field `javaLauncher` of task `:atomicfu:transformBOTH` of type `org.gradle.api.tasks.JavaExec`: error writing value of type 'org.gradle.api.internal.provider.DefaultProperty'
> Cannot find a Java installation on your machine matching this tasks requirements: {languageVersion=9, vendor=any vendor, implementation=vendor-specific} for MAC_OS on aarch64.
   > No matching toolchain could be found in the locally installed toolchains or the configured toolchain download repositories.

[fzhinkin]

@mvicsokolova, @Tapchicoma PTAL

[Tapchicoma]

Probably, we could instead JDK 9 use JDK 11 in tests. @mvicsokolova WDYT?

[mvicsokolova]

Yes, I guess it's enough to fix launcherForJdk(9) in transform tasks here

[fzhinkin]

Setting up the toolchain auto-provisioning (via foojay resolver plugin) seems like something reasonable to do despite bumping the version.

[Tapchicoma]

foojay plugin is already being applied in the project here

[Tapchicoma]

The main problem is JDK 9 release for Mac/arm64 platform which seems to be missing in the official providers.