Update dependency pandas to v2.2.2 (#71)

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This PR contains the following updates:

| Package | Change | Age | Adoption | Passing | Confidence |
|---|---|---|---|---|---|
| [pandas](https://pandas.pydata.org)
([source](https://github.com/pandas-dev/pandas)) | `==2.2.1` ->
`==2.2.2` |
[![age](https://developer.mend.io/api/mc/badges/age/pypi/pandas/2.2.2?slim=true)](https://docs.renovatebot.com/merge-confidence/)
|
[![adoption](https://developer.mend.io/api/mc/badges/adoption/pypi/pandas/2.2.2?slim=true)](https://docs.renovatebot.com/merge-confidence/)
|
[![passing](https://developer.mend.io/api/mc/badges/compatibility/pypi/pandas/2.2.1/2.2.2?slim=true)](https://docs.renovatebot.com/merge-confidence/)
|
[![confidence](https://developer.mend.io/api/mc/badges/confidence/pypi/pandas/2.2.1/2.2.2?slim=true)](https://docs.renovatebot.com/merge-confidence/)
|

---

### Release Notes

<details>
<summary>pandas-dev/pandas (pandas)</summary>

###
[`v2.2.2`](https://github.com/pandas-dev/pandas/compare/v2.2.1...v2.2.2)

[Compare
Source](https://github.com/pandas-dev/pandas/compare/v2.2.1...v2.2.2)

</details>

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2023_PyData_Berlin/requirements.txt

@@ -1,5 +1,5 @@
 numpy==1.26.4
-pandas==2.2.1
+pandas==2.2.2
 matplotlib==3.8.4
 pytest==8.1.1
 flake8==7.0.0