update go version and rm dep step

Author: patrickdevivo

.github/workflows/test.yml

@@ -10,20 +10,12 @@ jobs:
     - name: Set up Go 1.12
       uses: actions/setup-go@v1
       with:
-        go-version: 1.12
+        go-version: 1.13.1
       id: go
 
     - name: Check out code into the Go module directory
       uses: actions/checkout@v1
 
-    - name: Get dependencies
-      run: |
-        go get -v -t -d ./...
-        if [ -f Gopkg.toml ]; then
-            curl https://raw.githubusercontent.com/golang/dep/master/install.sh | sh
-            dep ensure
-        fi
-
     - name: Build
       run: go build -v .