build(deps): bump the sandbox-python group across 1 directory with 4 updates

Bumps the sandbox-python group with 4 updates in the /sandbox directory: [boto3](https://github.com/boto/boto3), [clickhouse-connect](https://github.com/ClickHouse/clickhouse-connect), [matplotlib](https://github.com/matplotlib/matplotlib) and [plotly](https://github.com/plotly/plotly.py).


Updates `boto3` from 1.43.20 to 1.43.28
- [Release notes](https://github.com/boto/boto3/releases)
- [Commits](boto/boto3@1.43.20...1.43.28)

Updates `clickhouse-connect` from 1.1.1 to 1.3.0
- [Release notes](https://github.com/ClickHouse/clickhouse-connect/releases)
- [Changelog](https://github.com/ClickHouse/clickhouse-connect/blob/main/CHANGELOG.md)
- [Commits](ClickHouse/clickhouse-connect@v1.1.1...v1.3.0)

Updates `matplotlib` from 3.10.9 to 3.11.0
- [Release notes](https://github.com/matplotlib/matplotlib/releases)
- [Commits](matplotlib/matplotlib@v3.10.9...v3.11.0)

Updates `plotly` from 6.7.0 to 6.8.0
- [Release notes](https://github.com/plotly/plotly.py/releases)
- [Changelog](https://github.com/plotly/plotly.py/blob/main/CHANGELOG.md)
- [Commits](plotly/plotly.py@v6.7.0...v6.8.0)

---
updated-dependencies:
- dependency-name: boto3
  dependency-version: 1.43.28
  dependency-type: direct:production
  update-type: version-update:semver-patch
  dependency-group: sandbox-python
- dependency-name: clickhouse-connect
  dependency-version: 1.3.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: sandbox-python
- dependency-name: matplotlib
  dependency-version: 3.11.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: sandbox-python
- dependency-name: plotly
  dependency-version: 6.8.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: sandbox-python
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

sandbox/requirements.in

@@ -8,18 +8,18 @@ fastparquet>=2026.3.0  # Parquet read/write engine (~9MB vs pyarrow's ~140MB)
 # matplotlib/seaborn render static PNGs headless with no system deps; plotly is
 # kept for interactive HTML output. Static plotly export (kaleido) is omitted
 # because it needs a full Chrome install.
-matplotlib>=3.9.0
+matplotlib>=3.11.0
 seaborn>=0.13.0  # statistical charts on top of matplotlib
-plotly>=5.24.0
+plotly>=6.8.0
 
 # ClickHouse client
-clickhouse-connect>=0.8.0
+clickhouse-connect>=1.3.0
 
 # HTTP client for Prometheus/Loki
 httpx>=0.28.0
 
 # S3 client (block archive)
-boto3>=1.35.0
+boto3>=1.43.28
 
 # Utilities
 python-dateutil>=2.9.0