remove flopy version pin and bump python to 3.14

Author: mnfienen

installation/environment.yml

@@ -4,7 +4,7 @@ channels:
   - nodefaults
 dependencies:
   # required
-  - python=3.12
+  - python=3.14
   - pip
 
   - numpy
@@ -43,7 +43,7 @@ dependencies:
   - pytest
   - statsmodels
   - dataretrieval
-  - flopy=3.9
+  - flopy
   - gis-utils
   - sfrmaker
   - contextily