Update publish.yaml

Signed-off-by: Alex Ellis <alexellis2@gmail.com>

Author: alexellis

.github/workflows/publish.yaml

@@ -2,14 +2,11 @@ name: publish
 
 on:
   push:
-    branches:
-      - 'master'
+    tags:
+      - '*'
 
 jobs:
   build:
-    concurrency: 
-      group: ${{ github.ref }}
-      cancel-in-progress: true
 
     permissions:
       packages: write
@@ -55,4 +52,4 @@ jobs:
           faas-cli publish
           --extra-tag ${{ github.sha }}
           --platforms linux/amd64
-          -f stack-amd64.yml
+          -f stack-amd64.yml