Update dependency urllib3 to v1.26.20

[renovate]

This PR contains the following updates:

Package	Change	Age	Confidence
urllib3 (changelog)	==1.26.15 -> ==1.26.20

---

Release Notes

urllib3/urllib3 (urllib3)

v1.26.20

Compare Source

====================

• Fixed a crash where certain standard library hash functions were absent in
  FIPS-compliant environments.
  (#&#8203;3432 <https://github.com/urllib3/urllib3/issues/3432>__)
• Replaced deprecated dash-separated setuptools entries in setup.cfg.
  (#&#8203;3461 <https://github.com/urllib3/urllib3/pull/3461>__)
• Took into account macOS setting ECONNRESET instead of EPROTOTYPE in
  its newer versions.
  (#&#8203;3416 <https://github.com/urllib3/urllib3/pull/3416>__)
• Backported changes to our tests and CI configuration from v2.x to support
  testing with CPython 3.12 and 3.13.
  (#&#8203;3436 <https://github.com/urllib3/urllib3/pull/3436>__)

v1.26.19

Compare Source

====================

• Added the Proxy-Authorization header to the list of headers to strip from requests when redirecting to a different host. As before, different headers can be set via Retry.remove_headers_on_redirect.
• Fixed handling of OpenSSL 3.2.0 new error message for misconfiguring an HTTP proxy as HTTPS. (#&#8203;3405 <https://github.com/urllib3/urllib3/issues/3405>__)

v1.26.18

Compare Source

====================

• Made body stripped from HTTP requests changing the request method to GET after HTTP 303 "See Other" redirect responses.

v1.26.17

Compare Source

====================

• Added the Cookie header to the list of headers to strip from requests when redirecting to a different host. As before, different headers can be set via Retry.remove_headers_on_redirect. (#&#8203;3139 <https://github.com/urllib3/urllib3/pull/3139>_)

v1.26.16

Compare Source

====================

• Fixed thread-safety issue where accessing a PoolManager with many distinct origins
  would cause connection pools to be closed while requests are in progress (#&#8203;2954 <https://github.com/urllib3/urllib3/pull/2954>_)

---

Configuration

📅 Schedule: Branch creation - At any time (no schedule defined), Automerge - At any time (no schedule defined).

🚦 Automerge: Disabled by config. Please merge this manually once you are satisfied.

♻ Rebasing: Whenever PR becomes conflicted, or you tick the rebase/retry checkbox.

🔕 Ignore: Close this PR and you won't be reminded about this update again.

---

• If you want to rebase/retry this PR, check this box

---

This PR was generated by Mend Renovate. View the repository job log.