chore: add workflow dispatch to nix ci

Author: pcnc

.github/workflows/nix-build.yml

@@ -5,6 +5,7 @@ on:
     branches:
       - develop
   pull_request:
+  workflow_dispatch:
 
 permissions:
   contents: read
@@ -56,4 +57,4 @@ jobs:
                     -e AWS_SESSION_TOKEN=${{ env.AWS_SESSION_TOKEN }} \
                     base_nix bash -c "./workspace/docker/nix/build_nix.sh"
     name: build psql bundle on ${{ matrix.arch }}
-    
+