Add pytables dependency

Add pytables dependency.

Waiting on related MR in bob/conda

bob/devtools/data/conda_build_config.yaml

@@ -77,12 +77,12 @@ zip_keys:
 
 # This version of bob-devel will be used at test time of packages:
 bob_devel:
-  - 2021.01.28
+  - 2021.01.29
 
 # This version of beat-devel will be used at test time of packages. Notice it
 # uses bob-devel and should have a version that is greater or equal its value
 beat_devel:
-  - 2021.01.28
+  - 2021.01.29
 
 # The build time only dependencies (build requirements).
 # Updating these to the latest version all the time is OK and a good idea.
@@ -171,6 +171,8 @@ pyopengl:
   - 3.1.1
 pyqtgraph:
   - 0.11.0
+pytables:
+  - 3.6.1
 pytest:
   - 6.2.2
 pytest_cov: