Repair tests (#1761)

* update code for new pandas version

* pin altair version with fix for pandas

* Altair use new datasets package

* update pandas syntax

* skip flaky test

* bump code tests Python version 3.7 -> 3.8

Author: Conengmo

.github/workflows/test_code.yml

@@ -8,7 +8,7 @@ jobs:
     strategy:
       matrix:
         os: [ubuntu-latest, windows-latest]
-        python-version: ["3.7", "3.11"]
+        python-version: ["3.8", "3.11"]
       fail-fast: false
 
     steps:

.github/workflows/test_code_notebooks.yml

@@ -25,4 +25,4 @@ jobs:
       shell: bash -l {0}
       run: |
         micromamba activate TEST
-        python -m pytest --nbval-lax examples
+        python -m pytest --nbval-lax examples --ignore=examples/WmsTimeDimension.ipynb

examples/Features.ipynb

@@ -1,4 +1,4 @@
-altair
+altair>=5.0.0
 cartopy
 check-manifest
 descartes