[skip changelog] Force windows env to use bash as shell instead of powershell (#453)

* [skip changelog] Force windows env to use cmd as shell instead of powershell

* temporarly enable only windows for test flow

* moved up cmd default shell for windows at job level

* revert and enable all

* disable macos

* force use of cmd on windows only for go getting dependencies

* typo

* typo

* test using `bash` as default shell

* cleanup task and comment

Author: Roberto Sora

.github/workflows/test.yaml

@@ -28,10 +28,14 @@ jobs:
           go-version: '1.13'
 
       - name: Install Go deps
+        # Since 10/23/2019 pwsh is the default shell
+        # on Windows, but pwsh fails to install protoc-gen-go so
+        # we force bash as default shell for all OSes in this task
         run: |
           go get github.com/golangci/govet
           go get golang.org/x/lint/golint
           go get github.com/golang/protobuf/protoc-gen-go
+        shell: bash
 
       - name: Install Taskfile
         uses: Arduino/actions/setup-taskfile@master