improvement: short sha

Author: leonhma

.github/workflows/ci.yml

@@ -7,15 +7,15 @@ on:
 jobs:
   build:
     runs-on: ubuntu-latest
-    if: ${{ !startsWith(github.ref, 'refs/tags/') }}
+    if: github.ref_type == "branch"
     steps:
       - uses: actions/checkout@v2
 
       - name: install dependencies
         run: yarn install
 
       - name: set development version
-        run: node version-bump.mjs dev-${{ github.sha }}
+        run: node version-bump.mjs "dev-$(git rev-parse --short HEAD)"
 
       - name: build
         run: yarn build