Update dependency urllib3 to v1.26.15

This MR contains the following updates:

Package	Update	Change
urllib3 (source)	patch	==1.26.14 -> ==1.26.15

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Release Notes

urllib3/urllib3

v1.26.15

Compare Source

• Fix socket timeout value when HTTPConnection is reused (#&#8203;2645 <https://github.com/urllib3/urllib3/issues/2645>__)
• Remove "!" character from the unreserved characters in IPv6 Zone ID parsing (#&#8203;2899 <https://github.com/urllib3/urllib3/issues/2899>__)
• Fix IDNA handling of '\x80' byte (#&#8203;2901 <https://github.com/urllib3/urllib3/issues/2901>__)

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