[CI] Various jobs failing to install `helm` binary

Summary

Various jobs are failing to download and install helm, causing the overall pipelines to fail:
Logs

$ ./scripts/ci/install_spec_dependencies
Reading package lists...
Building dependency tree...
Reading state information...
ca-certificates is already the newest version (20200601~deb10u2).
curl is already the newest version (7.64.0-4+deb10u2).
0 upgraded, 0 newly installed, 0 to remove and 33 not upgraded.
WARNING: apt does not have a stable CLI interface. Use with caution in scripts.
Reading package lists...
Building dependency tree...
Reading state information...
The following NEW packages will be installed:
  docker-ce-cli
0 upgraded, 1 newly installed, 0 to remove and 33 not upgraded.
Need to get 41.4 MB of archives.
After this operation, 174 MB of additional disk space will be used.
Get:1 https://download.docker.com/linux/debian buster/stable amd64 docker-ce-cli amd64 5:20.10.5~3-0~debian-buster [41.4 MB]
Fetched 41.4 MB in 1s (40.3 MB/s)
Selecting previously unselected package docker-ce-cli.
(Reading database ... 42459 files and directories currently installed.)
Preparing to unpack .../docker-ce-cli_5%3a20.10.5~3-0~debian-buster_amd64.deb ...
Unpacking docker-ce-cli (5:20.10.5~3-0~debian-buster) ...
Setting up docker-ce-cli (5:20.10.5~3-0~debian-buster) ...
gzip: stdin: unexpected end of file
tar: Child returned status 1
tar: Error is not recoverable: exiting now
chmod: cannot access 'linux-amd64/helm': No such file or directory
mv: cannot stat 'linux-amd64/helm': No such file or directory