ci: retry Go package download [DET-8932] (#5996)

We had one CI failure [1] caused by the Go package download somehow
fetching some incorrect file. There's no way to know now exactly what it
was, but it seems like it was probably a 5xx status page or something,
and the issue was evidently fairly transient, since it only happened
that once. So now we tell curl to retry that download a bunch to try to
get past that happening again.

Also upgrade from 1.18 to 1.18.10 while we're here.

[1] https://app.circleci.com/pipelines/github/determined-ai/determined/33339/workflows/dd7d6e62-e6c8-4152-bb41-3d313ae9adab/jobs/1170863

.circleci/config.yml

@@ -207,7 +207,7 @@ commands:
   reinstall-go:
     steps:
       - run: sudo rm -rf /usr/local/go # Remove system go.
-      - run: curl https://dl.google.com/go/go1.18.linux-amd64.tar.gz -o /tmp/go.linux-amd64.tar.gz
+      - run: curl --retry-connrefused --retry 10 https://dl.google.com/go/go1.18.10.linux-amd64.tar.gz -o /tmp/go.linux-amd64.tar.gz
       - run: sudo tar -C /usr/local -xzf /tmp/go.linux-amd64.tar.gz
 
   install-protoc: