feat: Add yq to act (#117)

* feat: update install script

* fix: revert toolset path

Since there's a lot of hard-coded references to this path.

* feat: Adds yq script

Unlike upstream we detect the arch suffix here.

* feat: include yq in act and custom flavors

* fix: include armhf in supported arch for act.yml

* fix: PR feedback, don't need to install twice for custom

linux/ubuntu/scripts/custom.sh

@@ -43,7 +43,7 @@ case "$(uname -m)" in
       dotnet
     )
     ;;
-  'x86_64') 
+  'x86_64')
     scripts=(
       basic
       gh