community/py3-quantiphy: upgrade to v2.20

https://github.com/KenKundert/quantiphy/releases/tag/v2.20

community/py3-quantiphy/APKBUILD

 # Contributor: Andy Hawkins <andy@gently.org.uk>
 # Maintainer: Andy Hawkins <andy@gently.org.uk>
 pkgname=py3-quantiphy
-pkgver=2.19
-pkgrel=2
+pkgver=2.20
+pkgrel=0
 pkgdesc="Physical Quantities"
 url="https://quantiphy.readthedocs.io/"
 arch="noarch"
@@ -42,5 +42,5 @@ package() {
 }
 
 sha512sums="
-8f76a493997ff51d325ad6e043c12cf0ea272cd1962cf7a9d3b354b2eb2d3c581eda4b3e291b174ba2fe7a1f2f151ed2720c16b9c428e03c22705afb74418755  quantiphy-v2.19.tar.gz
+53a221ee5e2bcf8276a603fd76c6abe4c9683284e12d64c59f54f852d814c2001e0798551b4a301f5cf4e6aab4cee3734bed158d69a176624da6c4841d988525  quantiphy-v2.20.tar.gz
 "