community/java-jffi: revert back to building with openjdk8

Tests get stuck on aarch64 with openjdk 11
(jnr/jffi#109). Moreover, upstream still
builds the native library using OpenJDK 8.

community/java-jffi/APKBUILD

@@ -4,7 +4,7 @@ pkgname=java-jffi
 _pkgname=${pkgname#java-}
 pkgver=1.3.4
 _libver=1.2
-pkgrel=0
+pkgrel=1
 pkgdesc="Java Foreign Function Interface"
 url="https://github.com/jnr/jffi"
 # arm* - InvokerTest fails
@@ -13,7 +13,7 @@ url="https://github.com/jnr/jffi"
 arch="all !armhf !armv7 !mips !mips64 !ppc64le !x86"
 license="Apache-2.0"
 depends="$pkgname-native=$pkgver-r$pkgrel java-jre-headless"
-makedepends="apache-ant file linux-headers openjdk11 texinfo"
+makedepends="apache-ant file linux-headers openjdk8 texinfo"
 subpackages="$pkgname-native"
 source="https://github.com/jnr/$_pkgname/archive/$_pkgname-$pkgver.tar.gz"
 builddir="$srcdir/$_pkgname-$_pkgname-$pkgver"