testing/rqlite: upgrade to 7.21.0

testing/rqlite/APKBUILD

 # Contributor: psykose <alice@ayaya.dev>
 # Maintainer: psykose <alice@ayaya.dev>
 pkgname=rqlite
-pkgver=7.20.6
+pkgver=7.21.0
 pkgrel=0
 pkgdesc="Lightweight, distributed relational database built on SQLite"
 url="https://github.com/rqlite/rqlite"
@@ -53,5 +53,5 @@ client() {
 }
 
 sha512sums="
-3c470135294453f402719765ae9f772b1afc87c52f16b24a95d38ab9f56f683511e90e76e6ee42d661156b4e49a3656d8af06c2147df698bf1aac991ab87dcf1  rqlite-7.20.6.tar.gz
+d066f849506895c2ea41c689af2694307405154bdc316391f94342802079669a401aedfe8c350883d5fda09e85eaa3a52d244b950952658923b0848a842f6f64  rqlite-7.21.0.tar.gz
 "