chore(deps): set openai dependency to >=1.55.3 (#3366)

## 📝 Summary

The minimum version requirement ensures compatibility with
httpx>=0.28.0, specifically around the 'proxies' kwarg handling that was
fixed in openai 1.55.3.

Earlier versions of openai conflict with httpx>=0.28.0.

See:
openai/openai-python#1902
openai/openai-python#1905

## 📋 Checklist

- [x] I have read the [contributor
guidelines](https://github.com/marimo-team/marimo/blob/main/CONTRIBUTING.md).
- [x] For large changes, or changes that affect the public API: this
change was discussed or approved through an issue, on
[Discord](https://marimo.io/discord?ref=pr), or the community
[discussions](https://github.com/marimo-team/marimo/discussions) (Please
provide a link if applicable).
- [x] I have added tests for the changes made.
- [x] I have run the code and verified that it works as expected.

## 📜 Reviewers

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pyproject.toml

@@ -90,7 +90,7 @@ recommended = [
     "altair>=5.4.0",            # Plotting in datasource viewer
     "polars[pyarrow]>=1.9.0",   # SQL output back in Python
     "sqlglot>=23.4",            # SQL cells parsing
-    "openai>=1.41.1",           # AI features
+    "openai>=1.55.3",           # AI features
     "ruff",                     # Formatting
     "nbformat>=5.7.0",          # Export as IPYNB
 ]
@@ -107,7 +107,7 @@ dev = [
     # For linting
     "ruff~=0.6.1",
     # For AI
-    "openai~=1.41.1",
+    "openai>=1.55.3",
 ]
 
 docs = [
@@ -240,7 +240,7 @@ extra-dependencies = [
     "anywidget~=0.9.13",
     "ipython~=8.12.3",
     # testing gen ai
-    "openai~=1.41.1",
+    "openai>=1.55.3",
     "anthropic==0.34.1",
     "google-generativeai==0.8.2",
     # exporting as ipynb