chore(deps): update golang docker tag to v1.17 - autoclosed

This MR contains the following updates:

Package	Type	Update	Change
golang	stage	minor	1.16 -> 1.17

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Dockerfile

@@ -5,7 +5,7 @@ RUN npm install && ./node_modules/.bin/webpack
 
 # Debian bullseye can't build gostatic due to its strict dependency
 # on Go 1.16, so we build it separately.
-FROM golang:1.16 AS gobuild
+FROM golang:1.17 AS gobuild
 RUN go get github.com/piranha/gostatic
 RUN go get git.autistici.org/ai/webtools/cmd/sitesearch
 RUN go get git.autistici.org/ai/webtools/cmd/jsonsubst