chore(deps): update dependency certifi to v2025.6.15 (#132)

This PR contains the following updates:

| Package | Change | Age | Confidence |
|---|---|---|---|
| [certifi](https://github.com/certifi/python-certifi) | `==2025.4.26` -> `==2025.6.15` | [![age](https://developer.mend.io/api/mc/badges/age/pypi/certifi/2025.6.15?slim=true)](https://docs.renovatebot.com/merge-confidence/) | [![confidence](https://developer.mend.io/api/mc/badges/confidence/pypi/certifi/2025.4.26/2025.6.15?slim=true)](https://docs.renovatebot.com/merge-confidence/) |

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### Release Notes

<details>
<summary>certifi/python-certifi (certifi)</summary>

### [`v2025.6.15`](https://github.com/certifi/python-certifi/compare/2025.04.26...2025.06.15)

[Compare Source](https://github.com/certifi/python-certifi/compare/2025.04.26...2025.06.15)

</details>

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### Configuration

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

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Reviewed-on: luke/epage#132
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.ARCHIVE/requirements.txt

@@ -1,4 +1,4 @@
-certifi==2025.4.26
+certifi==2025.6.15
 charset-normalizer==3.4.2
 click==8.2.1
 Flask==3.1.0