min tf 2.9

Author: FynnBe

dev/environment-tf.yaml

@@ -11,5 +11,5 @@ dependencies:
   - pytest
   - python
   - xarray
-  - tensorflow >=2.0,<3.0
+  - tensorflow >=2.9,<3.0
   - tifffile <=2022.4.8  # pin fixes Syntax error; see https://github.com/bioimage-io/core-bioimage-io-python/pull/259