Bump certifi from 2026.4.22 to 2026.5.20 (#12664)

Bumps [certifi](https://github.com/certifi/python-certifi) from
2026.4.22 to 2026.5.20.
<details>
<summary>Commits</summary>
<ul>
<li><a
href="https://github.com/certifi/python-certifi/commit/d7ea151afc2ce6bef0555b9349902bd867e928dd"><code>d7ea151</code></a>
2026.05.20 (<a
href="https://redirect.github.com/certifi/python-certifi/issues/413">#413</a>)</li>
<li>See full diff in <a
href="https://github.com/certifi/python-certifi/compare/2026.04.22...2026.05.20">compare
view</a></li>
</ul>
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requirements/constraints.txt

@@ -49,7 +49,7 @@ brotli==1.2.0 ; platform_python_implementation == "CPython"
     # via -r requirements/runtime-deps.in
 build==1.5.0
     # via pip-tools
-certifi==2026.4.22
+certifi==2026.5.20
     # via requests
 cffi==2.0.0
     # via

requirements/dev.txt

@@ -49,7 +49,7 @@ brotli==1.2.0 ; platform_python_implementation == "CPython"
     # via -r requirements/runtime-deps.in
 build==1.5.0
     # via pip-tools
-certifi==2026.4.22
+certifi==2026.5.20
     # via requests
 cffi==2.0.0
     # via

requirements/doc-spelling.txt

@@ -10,7 +10,7 @@ alabaster==1.0.0
     # via sphinx
 babel==2.18.0
     # via sphinx
-certifi==2026.4.22
+certifi==2026.5.20
     # via requests
 charset-normalizer==3.4.7
     # via requests

requirements/doc.txt

@@ -10,7 +10,7 @@ alabaster==1.0.0
     # via sphinx
 babel==2.18.0
     # via sphinx
-certifi==2026.4.22
+certifi==2026.5.20
     # via requests
 charset-normalizer==3.4.7
     # via requests