Pin dependency versions

Go from something like this:

```
dependencies = [
    "polars",
    "antlr4-python3-runtime==4.13.2",
    "elasticsearch",
    "numpy",
    ...
]
```
to this:
```
dependencies = [
    "polars>=0.20.0,<1.0.0",
    "elasticsearch>=8.0.0,<9.0.0",
    ...
]
```
