Unable to Install Zabbix repository on Ubuntu 20.04

[CatarinaGomes]

Hello,

I am unable to install Zabbix repository on Ubuntu 20.04 due to certificate error even after updating the certificates.

sudo update-ca-certificates -f
Clearing symlinks in /etc/ssl/certs...
done.
Updating certificates in /etc/ssl/certs...
rehash: warning: skipping ca-certificates.crt,it does not contain exactly one certificate or CRL
127 added, 0 removed; done.
Running hooks in /etc/ca-certificates/update.d...
done.

sudo apt-get install --reinstall ca-certificates
sudo apt-get -f install
sudo dpkg --purge --force-depends ca-certificates
sudo apt-get -f install

wget https://repo.zabbix.com/zabbix/6.2/u...u20.04_all.deb
--2022-07-20 09:57:33-- https://repo.zabbix.com/zabbix/6.2/u...u20.04_all.deb
Resolving repo.zabbix.com (repo.zabbix.com)... 178.128.6.101, 2604:a880:2:d0::2062:d001
Connecting to repo.zabbix.com (repo.zabbix.com)|178.128.6.101|:443... connected.
ERROR: cannot verify repo.zabbix.com's certificate, issued by ‘CN=Zscaler Intermediate Root CA (zscaler.net) (t)\\ ,OU=Zscaler Inc.,O=Zscaler Inc.,ST=California,C=US’:
Unable to locally verify the issuer's authority.
To connect to repo.zabbix.com insecurely, use `--no-check-certificate'.

Any ideas on how to overcome this?

Thank you