Update golang

Author: cl-bvl

.travis.yml

@@ -1,6 +1,6 @@
 language: go
 go:
-  - 1.16.x
+  - 1.17.x
 
 services:
   - docker

Dockerfile

@@ -1,5 +1,5 @@
 # Build in Docker container
-FROM golang:1.16.2 as builder
+FROM golang:1.17.6 as builder
 
 ENV CGO_ENABLED 0
 WORKDIR /src/s3sync
@@ -11,4 +11,4 @@ RUN go mod vendor && \
 FROM debian:buster-slim
 RUN apt update && apt install -y ca-certificates
 COPY --from=builder /src/s3sync/s3sync /s3sync
-ENTRYPOINT ["/s3sync"]
+ENTRYPOINT ["/s3sync"]