system/yaml: bump to 0.2.1

system/yaml/APKBUILD

 # Contributor: Natanael Copa <ncopa@alpinelinux.org>
 # Maintainer: A. Wilcox <awilfox@adelielinux.org>
 pkgname=yaml
-pkgver=0.1.7
+pkgver=0.2.1
 pkgrel=0
 pkgdesc="YAML 1.1 parser and emitter written in C"
 url="https://pyyaml.org/wiki/LibYAML"
@@ -35,4 +35,4 @@ package() {
 	make DESTDIR="$pkgdir" install
 }
 
-sha512sums="1ee5007dd10db137b5ee80f8117f07390ec04af98d087a5f5475dd2b38d87c699b79ab1676e6c7bfa263323fcdf8edd69fada2b0b7f9c57bef4e46cd65f1e975  yaml-0.1.7.tar.gz"
+sha512sums="97ebeea2a2c877b24de2e1ffbf175d07d97d5c8b90e06d21fd057e1114d10b96c04fd92c2ed4e956db751b7ac1686b3fd5778927912ca5bb0d096908a1351235  yaml-0.2.1.tar.gz"