windows: install go on github's windows host

github_action.yml

name: Checks on_push                                                                                                     
                                                                                                                         
on:                                                                                                                      
  push:                                                                                                                  
    branches:                                                                                                            
      - "*"                                                                                                              
    tags:                                                                                                                
      - "!v*.*.*"                                                                                                        
jobs:                                                                                                                    
  windows_test:                                                                                                          
    name: windows-latest - tests                                                                                         
    runs-on: windows-latest                                                                                              
    steps:                                                                                                               
    - name: run gosec                                                                                                    
      run: |                                                                                                             
          export GOPATH="/$(go env GOPATH | sed 's/\\/\//g'| sed 's/://' )"                                              
          go get github.com/securego/gosec/cmd/gosec                                                                     
          PATH="/$(go env GOPATH | sed 's/\\/\//g'| sed 's/://' )/bin":$PATH                                             
          env |sort                                                                                                      
          gosec version                                                                                                  
          go version                                                                                                     
          go env                                                                                                         
      shell: bash