build: Bump required Go version to 1.14 (#84)

Author: tembleking

.github/workflows/ci-master.yml

@@ -40,6 +40,11 @@ jobs:
       - name: Checkout code
         uses: actions/checkout@v2
 
+      - name: Set up Go
+        uses: actions/setup-go@v2
+        with:
+          go-version: ^1.14
+
       - name: Build project
         run: GOOS=${{ matrix.os }} GOARCH=${{ matrix.arch }} go build -o terraform-provider-sysdig