disable checks for nix-package branch

.github/workflows/api-push.yaml

@@ -4,6 +4,7 @@ on:
         branches:
             - master
             - v3
+            - '!nix-packages'
         paths:
             - api/**
 

.github/workflows/package-pr.yaml

@@ -2,6 +2,8 @@ name: 'Package Pull Requests'
 
 on:
     pull_request:
+        branches:
+            - '!nix-packages'
         types:
             - opened
             - reopened

.github/workflows/package-push.yaml

@@ -5,6 +5,7 @@ on:
         branches:
             - master
             - v3
+            - '!nix-packages'
         paths:
             - packages/**