Fix SSL Verification in Python SDK

[stnguyen90]

All the SDKs verify SSL certificates by default except for the Python SDK due to a but in the logic for SSL verification. This change fixes the logic to ensure SSL verification is done by default.

Closes: appwrite/sdk-for-python#40

Before the update, SSL verification isn't done and there is a warning that SSL verification isn't done. The following screenshot shows the warning as well as the request continuing to https://dne.appwrite.io/v1 (which results in HTTP Status 400 as expected).

After the update, SSL verification is done and the request is not sent due to the SSL handshake failure:

[stnguyen90]

The Travis CI build error looks like the same error I experienced over in #270. Should I apply the same fix in this PR?

[TorstenDittmann]

The Travis CI build error looks like the same error I experienced over in #270. Should I apply the same fix in this PR?

We fixed the CI on master, please get in sync with it and the tests should run again 🙏🏻

[stnguyen90]

The Travis CI build error looks like the same error I experienced over in #270. Should I apply the same fix in this PR?

We fixed the CI on master, please get in sync with it and the tests should run again 🙏🏻

I rebased and the build is now passing.

[eldadfux]

THANK YOU! All changes merged 🥳

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