Unpin all versions of packages + remove xeus-cling+friends

Trying to get this to build on both mybinder and the existing CI

Author: yuvipanda

.binder/environment.yml

@@ -3,41 +3,41 @@ channels:
 - nodefaults
 dependencies:
 # !! you can only use single `=` to set a version. Otherwise it will break the update job
-- invoke=2.2.0
+- invoke
 - packaging
 - pyyaml
 # applications
-- jupyterlab=4.1.8
-- jupyter-collaboration=2.1.1
-- nbconvert=7.16.4
-- notebook=7.1.3
+- jupyterlab
+- jupyter-collaboration
+- nbconvert
+- notebook
 # extensions
-- jupyter-offlinenotebook=0.3.1
-- jupyterlab-fasta=3.3
-- jupyterlab-geojson=3.4
+- jupyter-offlinenotebook
+- jupyterlab-fasta
+- jupyterlab-geojson
 # Python Kernel
-- ipykernel=6.29.3
-- xeus-python=0.14.3
-- ipywidgets=8
-- ipyleaflet=0.19.1
-- altair=5.3.0
-- bqplot=0.12.43
-- dask=2024.5.0
-- matplotlib-base=3.8.4
-- pandas=2.2.2
-- python=3.9
-- scikit-image=0.22.0
-- scikit-learn=1.4.2
-- seaborn-base=0.13.2
-- tensorflow=2.11.0
-- sympy=1.12
-- traittypes=0.2.1
+- ipykernel
+- xeus-python
+- ipywidgets
+- ipyleaflet
+- altair
+- bqplot
+- dask
+- matplotlib-base
+- pandas
+- python=3.12
+- scikit-image
+- scikit-learn
+- seaborn-base
+- tensorflow
+- sympy
+- traittypes
 # C++ Kernel
-- xeus-cling=0.13.0
-- xtensor=0.23.10
-- xtensor-blas=0.19.2
-- xwidgets=0.26.1
-- xleaflet=0.16.0
+# - xeus-cling
+# - xtensor
+# - xtensor-blas
+# - xwidgets
+# - xleaflet
 # CLI tools
 - pip
 - vim