Bump Cohere min version to limit backtracking on upgrade (#36666)

While testing #36537 I noticed cohere backracking quite a bit with
older version. Bumping Cohere to more recent minimum version
(released in November) decreased it quite a bit.

Since Cohere is mostly standalone package, and likely you want to
bump people to later version, it's safe to assume we can bump the
minimum version.

airflow/providers/cohere/provider.yaml

@@ -40,7 +40,7 @@ integrations:
 
 dependencies:
   - apache-airflow>=2.6.0
-  - cohere>=4.27
+  - cohere>=4.37
 
 hooks:
   - integration-name: Cohere

generated/provider_dependencies.json

@@ -290,7 +290,7 @@
   "cohere": {
     "deps": [
       "apache-airflow>=2.6.0",
-      "cohere>=4.27"
+      "cohere>=4.37"
     ],
     "cross-providers-deps": [],
     "excluded-python-versions": [],