pinned version of pandas>2, improved CI wheel-test

.gitlab-ci.yml

@@ -134,12 +134,14 @@ doctest:
 # Building stage
 # ===========================================================
 # check if we are able to build a wheel
+# and if the import works
 wheel:
   stage: build
   script:
     - pip install wheel
     - pip wheel .
     - pip install .
+    - python -c 'import saqc; print(f"{saqc.__version__=}")'
 
 docs:
   stage: build

setup.py

@@ -39,7 +39,7 @@ setup(
         "numpy",
         "outlier-utils",
         "pyarrow",
-        "pandas",
+        "pandas>=2.0.0",
         "scikit-learn",
         "scipy",
         "typing_extensions",