Update drone config

.drone.yml

@@ -16,10 +16,10 @@ steps:
   - npm run-script build
 
 - name: backend
-  image: golang:1.16.7-alpine3.14
+  image: golang:1.17.0-alpine3.14
   commands:
   - apk --no-cache add git
-  - GO111MODULE=off go get -tags 'postgres' -u github.com/golang-migrate/migrate/cmd/migrate
+  - go get -tags 'postgres' -u github.com/golang-migrate/migrate/cmd/migrate@latest
   - cp $$GOPATH/bin/migrate migrate
   - CGO_ENABLED=0 go build -ldflags '-extldflags "-static"' -trimpath -v -o canapeapp/app backend/*.go