ci: Unpin (some) dependencies (#3186)

Author: FBruzzesi

.github/workflows/downstream_tests.yml

@@ -187,8 +187,6 @@ jobs:
         run: |
           cd py-shiny
           . .venv/bin/activate
-          # temporary to get CI green
-          uv pip install "chatlas<0.9.0"
           make narwhals-install-shiny
       - name: install-narwhals-dev
         run: |
@@ -242,11 +240,6 @@ jobs:
           cd tea-tasting
           uv pip uninstall narwhals
           uv pip install -e ./..
-      - name: temporary pin duckdb # TODO(FBruzzesi): Unpin duckdb
-        run: |
-          cd tea-tasting
-          uv pip uninstall duckdb
-          uv pip install "duckdb<1.4"
       - name: show-deps
         run: |
           cd tea-tasting
@@ -292,8 +285,6 @@ jobs:
         run: |
           uv pip uninstall narwhals --system
           uv pip install -e . --system
-          # temporary pin to get CI green
-          uv pip install "polars<1.30" --system
       - name: show-deps
         run: uv pip freeze
       - name: Run pytest

.github/workflows/extremes.yml

@@ -152,10 +152,8 @@ jobs:
           uv pip install pandas --pre --index https://pypi.anaconda.org/scientific-python-nightly-wheels/simple --system -U
       - name: install pyarrow nightly
         run: |
-          # commented out nightly whilst it fails to install
-          uv pip install -U pyarrow --system
-          # uv pip uninstall pyarrow --system
-          # uv pip install pyarrow --pre --index https://pypi.fury.io/arrow-nightlies/ --system -U
+          uv pip uninstall pyarrow --system
+          uv pip install pyarrow --pre --index https://pypi.fury.io/arrow-nightlies/ --system -U
       - name: install numpy nightly
         run: |
           uv pip uninstall numpy --system
@@ -174,9 +172,10 @@ jobs:
         run: |
           DEPS=$(uv pip freeze)
           echo "$DEPS" | grep 'pandas.*dev'
-          # echo "$DEPS" | grep 'pyarrow.*dev'
+          echo "$DEPS" | grep 'pyarrow.*dev'
           echo "$DEPS" | grep 'numpy.*dev'
           echo "$DEPS" | grep 'dask.*@'
+          echo "$DEPS" | grep 'duckdb.*dev'
       - name: Run pytest
         run: |
           pytest tests --cov=narwhals --cov=tests --cov-fail-under=50 --runslow \