chore(deps): update dependency urllib3 to v1.26.15 (#120)

This PR contains the following updates:

| Package | Update | Change |
|---|---|---|
| [urllib3](https://urllib3.readthedocs.io/)
([source](https://github.com/urllib3/urllib3)) | patch | `==1.26.14`
-> `==1.26.15` |

---

### Release Notes

<details>
<summary>urllib3/urllib3</summary>

###
[`v1.26.15`](https://github.com/urllib3/urllib3/blob/HEAD/CHANGES.rst#&#8203;12615-2023-03-10)

[Compare
Source](https://github.com/urllib3/urllib3/compare/1.26.14...1.26.15)

- 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>`\__)

</details>

---

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requirements.txt

@@ -216,6 +216,6 @@ sqlparse==0.4.3 ; python_full_version >= "3.8.1" and python_version < "4.0" \
 tzdata==2022.7 ; python_full_version >= "3.8.1" and python_version < "4.0" and sys_platform == "win32" \
     --hash=sha256:2b88858b0e3120792a3c0635c23daf36a7d7eeeca657c323da299d2094402a0d \
     --hash=sha256:fe5f866eddd8b96e9fcba978f8e503c909b19ea7efda11e52e39494bad3a7bfa
-urllib3==1.26.14 ; python_full_version >= "3.8.1" and python_version < "4" \
-    --hash=sha256:076907bf8fd355cde77728471316625a4d2f7e713c125f51953bb5b3eecf4f72 \
-    --hash=sha256:75edcdc2f7d85b137124a6c3c9fc3933cdeaa12ecb9a6a959f22797a0feca7e1
+urllib3==1.26.15; python_full_version >= "3.8.1" and python_version < "4" \
+    --hash=sha256:8a388717b9476f934a21484e8c8e61875ab60644d29b9b39e11e4b9dc1c6b305 \
+    --hash=sha256:aa751d169e23c7479ce47a0cb0da579e3ede798f994f5816a74e4f4500dcea42