testing/primecount: upgrade to 7.15

testing/primecount/APKBUILD

 # Contributor: Hoang Nguyen <folliekazetani@protonmail.com>
 # Maintainer: Hoang Nguyen <folliekazetani@protonmail.com>
 pkgname=primecount
-pkgver=7.14
+pkgver=7.15
 pkgrel=0
 pkgdesc="Fast prime counting C/C++ library"
 url="https://github.com/kimwalisch/primecount"
@@ -37,5 +37,5 @@ package() {
 }
 
 sha512sums="
-7b33cdcf8bbf4c9b7159433517869aaf810cb72bb3a000ff7f331a7b093c5268b6b001cfff9b7f774103d52a0f5edfad546db81bcc34a9ae9f4a0604adbc16d4  primecount-7.14.tar.gz
+6058c7526aa3e1a01b6b110e67bfa4aded90276245830073b72eb479f54a460786088182fe9d9a354ed7f24cdda2c93dbf12a7e432e3e7b578ce6d3c9c435916  primecount-7.15.tar.gz
 "