update-requirements needs to recognize two-digit version numbers

[sssoleileraaa]

Description

When creating the requirements.txt file by running the update-requirements script, two hashes were added to for our urllib dependency when we only expected one.

This is due to a bug in the script that uses startswith command to decide which package to grab -- two different versions of the same package can satisfy the check condition. E.g. urllib3-1.24.1 and urllib3-1.24 both start with urllib3-1.24.