Update fails on raspberry pi - context deadline exceeded

Since #249 got closed I want to create a new issue for the problem that was mentioned there and that some of us including me face:
When I run `sudo cloudflare update` I get the error:
```failed to update cloudflared: context deadline exceeded (Client.Timeout or context cancellation while reading body)```

More info:
```
cloudflared --version

cloudflared version 2020.10.0 (built 2020-10-06-1530 UTC)
```
```
cat /etc/os-release

PRETTY_NAME="Raspbian GNU/Linux 10 (buster)"
NAME="Raspbian GNU/Linux"
VERSION_ID="10"
VERSION="10 (buster)"
VERSION_CODENAME=buster
ID=raspbian
ID_LIKE=debian
HOME_URL="http://www.raspbian.org/"
SUPPORT_URL="http://www.raspbian.org/RaspbianForums"
BUG_REPORT_URL="http://www.raspbian.org/RaspbianBugs"
```