cicd: build-public: allow runs for each push

Let every branch push execute the workflow instead of
canceling earlier runs.

Signed-off-by: Nate Drude <nate.d@variscite.com>

Author: nsdrude-var

.github/workflows/build-public.yml

@@ -16,10 +16,6 @@ on:
       - '**'
   workflow_dispatch:
 
-concurrency:
-  group: ${{ github.workflow }}-${{ github.ref }}
-  cancel-in-progress: true
-
 jobs:
   build-flexbuild:
     # Skip the entire job if the repository is private