build: 🔨 update python runtime to 3.13 and refresh dependencies

The commit updates Python runtime to 3.13 and refreshes dependencies:

- Moves from Python 3.11-3.13 to requiring Python 3.13+
- Upgrades several dependencies:
  - dagster packages to 1.9.8
  - huggingface-hub to 0.27.1
  - polars to 1.19.0
  - Multiple other minor version bumps

Also adds .python-version file to specify Python 3.13 runtime.

.gitignore

@@ -81,9 +81,6 @@ target/
 profile_default/
 ipython_config.py
 
-# pyenv
-.python-version
-
 # pipenv
 #   According to pypa/pipenv#598, it is recommended to include Pipfile.lock in version control.
 #   However, in case of collaboration, if having platform-specific dependencies or dependencies

.python-version

@@ -0,0 +1 @@
+3.13

pyproject.toml

@@ -3,18 +3,18 @@ name = "datadex"
 version = "1.0.0"
 authors = [{ name = "David Gasquez" }]
 dependencies = [
-    "dagster>=1.9.6",
-    "dagster-duckdb>=0.25.6",
-    "dagster-duckdb-polars>=0.25.6",
-    "dagster-webserver>=1.9.6",
+    "dagster>=1.9.8",
+    "dagster-duckdb>=0.25.8",
+    "dagster-duckdb-polars>=0.25.8",
+    "dagster-webserver>=1.9.8",
     "datasets>=3.2.0",
     "duckdb>=1.1.3",
     "httpx>=0.28.1",
-    "huggingface-hub>=0.27.0",
-    "polars>=1.18.0",
+    "huggingface-hub>=0.27.1",
+    "polars>=1.19.0",
 ]
 
-requires-python = ">=3.11, <=3.13"
+requires-python = ">=3.13"
 readme = "README.md"
 license = { text = "MIT" }