build: reverted versions of pytensor and pymc in env files

pytensor and pymc versions in environment files are reverted
to the previous setting as the changes that made the versions
more restrictive led to some issues with devito (likely due
to a different clang compiler being installed.

Author: mrava87

environment-dev-arm.yml

@@ -11,8 +11,8 @@ dependencies:
   - pyfftw
   - pywavelets
   - sympy
-  - pytensor>=2.28.0
-  - pymc>=5.21.0
+  - pymc>=5
+  - pytensor
   - matplotlib
   - ipython
   - pytest

environment-dev.yml

@@ -11,8 +11,8 @@ dependencies:
   - pyfftw
   - pywavelets
   - sympy
-  - pytensor>=2.28.0
-  - pymc>=5.21.0
+  - pymc>=5
+  - pytensor
   - matplotlib
   - ipython
   - pytest