Bump certifi from 2025.4.26 to 2025.6.15 (aio-libs#11218)

Bumps [certifi](https://github.com/certifi/python-certifi) from
2025.4.26 to 2025.6.15.
<details>
<summary>Commits</summary>
<ul>
<li><a
href="https://github.com/certifi/python-certifi/commit/e767d5938eddddf804216cec93a55c85129c5f2d"><code>e767d59</code></a>
2025.06.15 (<a
href="https://redirect.github.com/certifi/python-certifi/issues/357">#357</a>)</li>
<li><a
href="https://github.com/certifi/python-certifi/commit/3e7076557d66b598fcca462e422dc988f09a6802"><code>3e70765</code></a>
Bump actions/setup-python from 5.5.0 to 5.6.0</li>
<li><a
href="https://github.com/certifi/python-certifi/commit/9afd2ff407b8a0638988c952a6636b8dd623af7c"><code>9afd2ff</code></a>
Bump actions/download-artifact from 4.2.1 to 4.3.0</li>
<li><a
href="https://github.com/certifi/python-certifi/commit/d7c816cbc9cf621b3ddc8cd7fa7eda3f36982620"><code>d7c816c</code></a>
remove code that's no longer required that 3.7 is our minimum (<a
href="https://redirect.github.com/certifi/python-certifi/issues/351">#351</a>)</li>
<li><a
href="https://github.com/certifi/python-certifi/commit/189961379209973abd0dd6304297f03e2359e1b9"><code>1899613</code></a>
Declare setuptools as the build backend in pyproject.toml (<a
href="https://redirect.github.com/certifi/python-certifi/issues/350">#350</a>)</li>
<li><a
href="https://github.com/certifi/python-certifi/commit/c8741423d67e1025c0bdad5225ded05cf962f207"><code>c874142</code></a>
update CI for ubuntu 20.04 deprecation (<a
href="https://redirect.github.com/certifi/python-certifi/issues/348">#348</a>)</li>
<li>See full diff in <a
href="https://github.com/certifi/python-certifi/compare/2025.04.26...2025.06.15">compare
view</a></li>
</ul>
</details>
<br />


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requirements/constraints.txt

@@ -32,7 +32,7 @@ brotli==1.1.0 ; platform_python_implementation == "CPython"
     # via -r requirements/runtime-deps.in
 build==1.2.2.post1
     # via pip-tools
-certifi==2025.4.26
+certifi==2025.6.15
     # via requests
 cffi==1.17.1
     # via

requirements/dev.txt

@@ -32,7 +32,7 @@ brotli==1.1.0 ; platform_python_implementation == "CPython"
     # via -r requirements/runtime-deps.in
 build==1.2.2.post1
     # via pip-tools
-certifi==2025.4.26
+certifi==2025.6.15
     # via requests
 cffi==1.17.1
     # via

requirements/doc-spelling.txt

@@ -10,7 +10,7 @@ alabaster==1.0.0
     # via sphinx
 babel==2.17.0
     # via sphinx
-certifi==2025.4.26
+certifi==2025.6.15
     # via requests
 charset-normalizer==3.4.2
     # via requests

requirements/doc.txt

@@ -10,7 +10,7 @@ alabaster==1.0.0
     # via sphinx
 babel==2.17.0
     # via sphinx
-certifi==2025.4.26
+certifi==2025.6.15
     # via requests
 charset-normalizer==3.4.2
     # via requests