Add go 1.16.0-rc1 to github workflow (#1386)

.github/workflows/development.yml

@@ -16,7 +16,7 @@ jobs:
   test-build-upload:
     strategy:
       matrix:
-        go-version: [1.14.x, 1.15.x]
+        go-version: [1.14.x, 1.15.x, 1.16.0-rc1]
         platform: [ubuntu-latest]
     runs-on: ${{ matrix.platform }}
     steps:
@@ -24,6 +24,7 @@ jobs:
       uses: actions/setup-go@v2
       with:
         go-version: ${{ matrix.go-version }}
+        stable: false
     - name: Checkout code
       uses: actions/checkout@v2
       with: