Merge branch 'update-io-testing' of github.com:zm711/python-neo into fix_blackrock_numpy2

Author: samuelgarcia

.github/workflows/io-test.yml

@@ -18,7 +18,7 @@ jobs:
     strategy:
       fail-fast: true
       matrix:
-        python-version: ['3.9', '3.12']
+        python-version: ['3.9', '3.12', '3.13']
     defaults:
       # by default run in bash mode (required for conda usage)
       run:

environment_testing.yml

@@ -4,6 +4,3 @@ channels:
 dependencies:
   - datalad
   - pip
-  # temporary have this here for IO testing while we decide how to deal with
-  # external packages not 2.0 ready
-  - numpy=1.26.4