ci/gha: switch to go 1.16 final

kolyshkin · kolyshkin · commit e1f380a9185f · 2021-03-01T10:03:19.000-08:00
rc1 is removed as non-rc 1.16 is released

Signed-off-by: Kir Kolyshkin &lt;kolyshkin@gmail.com&gt;
diff --git a/.github/workflows/validate.yml b/.github/workflows/validate.yml
@@ -50,7 +50,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        go-version: [1.14.x, 1.15.x, 1.16.0-rc1]
+        go-version: [1.14.x, 1.15.x, 1.16.x]
     runs-on: ubuntu-20.04
     steps:
     - uses: actions/checkout@v2
