build(packaging): version number improvements (#4037)

packaging/linux/Arch/PKGBUILD

@@ -67,7 +67,7 @@ prepare() {
 
 build() {
     export BRANCH="@GITHUB_BRANCH@"
-    export BUILD_VERSION="@GITHUB_BUILD_VERSION@"
+    export BUILD_VERSION="@BUILD_VERSION@"
     export COMMIT="@GITHUB_COMMIT@"
 
     export CC="gcc-${_gcc_version}"

packaging/sunshine.rb

@@ -6,7 +6,7 @@ class @PROJECT_NAME@ < Formula
   homepage "@PROJECT_HOMEPAGE_URL@"
   url "@GITHUB_CLONE_URL@",
     tag: "@GITHUB_TAG@"
-  version "@FORMULA_VERSION@"
+  version "@BUILD_VERSION@"
   license all_of: ["GPL-3.0-only"]
   head "@GITHUB_CLONE_URL@", branch: "@GITHUB_DEFAULT_BRANCH@"