ci/gha: re-enable go caching

Since actions/setup-go#368 is now fixed
(in https://github.com/actions/setup-go/releases/tag/v4.1.0), there
is no need to disable caching when using different distros.

Signed-off-by: Kir Kolyshkin <kolyshkin@gmail.com>

.github/workflows/test.yml

@@ -67,7 +67,6 @@ jobs:
     - name: install go ${{ matrix.go-version }}
       uses: actions/setup-go@v4
       with:
-        cache: false # https://github.com/actions/setup-go/issues/368
         go-version: ${{ matrix.go-version }}
 
     - name: build