[build] Switch to AdoptOpenJDK distro. Relates to #604

Alas, Gradle only auto-downloads AdopOpenDJK/Adoptium builds.
Can't expect everyone making a build to have a suitable JDK
installed via Sdkman or Jabba. Unfortunately AdoptOpenJDK will
have to do for now.

See gradle/gradle#19140

apps/jreleaser-tool-provider/jreleaser-tool-provider.gradle

@@ -84,7 +84,7 @@ tasks.withType(JavaCompile) { JavaCompile c ->
 java {
     toolchain {
         languageVersion = JavaLanguageVersion.of(17)
-        vendor = JvmVendorSpec.AZUL
+        vendor = JvmVendorSpec.ADOPTOPENJDK
     }
 }