Restore Python 3.12 support for Databricks

We excluded Python 3.12 from Databricks provider, because it was
failing our Python 3.12 tests intermittently (but often enough to
make a difference). It turned out that this was caused by running
the tests with coverage enabled and PEP 669 implementation in
Python 3.12 impacting intermittently performance of tests run
with coverage. However seems that experimenetal PEP 669 support
implemented in coverage 7.4.0 is nicely handling the performance
issues and after apache#38194 we shoudl be able to enable Python 3.12 for
Databricks without impacting our tests.

Related: databricks/databricks-sql-python#369

airflow/providers/databricks/provider.yaml

@@ -60,12 +60,6 @@ versions:
   - 1.0.1
   - 1.0.0
 
-
-# Databricks is excluded for Python 3.12 because running databricks-sql-python imports on Python 3.12
-# Cause extremely long import times  https://github.com/databricks/databricks-sql-python/issues/369
-# and until the problem is fixed, we exclude Python 3.12 for Databricks provider
-excluded-python-versions: ['3.12']
-
 dependencies:
   - apache-airflow>=2.6.0
   - apache-airflow-providers-common-sql>=1.10.0

generated/provider_dependencies.json

@@ -377,9 +377,7 @@
     "cross-providers-deps": [
       "common.sql"
     ],
-    "excluded-python-versions": [
-      "3.12"
-    ],
+    "excluded-python-versions": [],
     "state": "ready"
   },
   "datadog": {

pyproject.toml

@@ -346,7 +346,8 @@ devel-tests = [
     "aioresponses>=0.7.6",
     "backports.zoneinfo>=0.2.1;python_version<'3.9'",
     "beautifulsoup4>=4.7.1",
-    "coverage>=7.2",
+    # Coverage 7.4.0 added experimental support for Python 3.12 PEP669 which we use in Airflow
+    "coverage>=7.4.0",
     "pytest-asyncio>=0.23.3",
     "pytest-cov>=4.1.0",
     "pytest-icdiff>=0.9",
@@ -665,12 +666,12 @@ common-sql = [ # source: airflow/providers/common/sql/provider.yaml
   "sqlparse>=0.4.2",
 ]
 databricks = [ # source: airflow/providers/databricks/provider.yaml
-  "aiohttp>=3.9.2, <4;python_version != \"3.12\"",
-  "apache-airflow[common_sql];python_version != \"3.12\"",
-  "databricks-sql-connector>=2.0.0, <3.0.0, !=2.9.0;python_version != \"3.12\"",
-  "requests>=2.27.0,<3;python_version != \"3.12\"",
+  "aiohttp>=3.9.2, <4",
+  "apache-airflow[common_sql]",
+  "databricks-sql-connector>=2.0.0, <3.0.0, !=2.9.0",
+  "requests>=2.27.0,<3",
   # Devel dependencies for the databricks provider
-  "deltalake>=0.12.0;python_version != \"3.12\"",
+  "deltalake>=0.12.0",
 ]
 datadog = [ # source: airflow/providers/datadog/provider.yaml
   "datadog>=0.14.0",