fernflower: fix build.

Author: noptrix

packages/fernflower/PKGBUILD

@@ -9,8 +9,8 @@ groups=('blackarch' 'blackarch-decompiler')
 arch=('any')
 url='https://github.com/fesh0r/fernflower'
 license=('Apache')
-depends=('jdk8-openjdk')
-makedepends=('git' 'jdk8-openjdk')
+depends=('jdk17-openjdk')
+makedepends=('git' 'jdk17-openjdk' 'gradle')
 source=("git+https://github.com/fesh0r/$pkgname.git")
 sha512sums=('SKIP')