Cross-database date macro (#806)

* Cross-database `date` macro

* Temporary dev requirements for testing

* Add meaningless newline to bump CI

* Update changelog entry

* Revert "Add meaningless newline to bump CI"

This reverts commit df3519e.

* Revert "Temporary dev requirements for testing"

This reverts commit e77835f.

---------

Co-authored-by: Colin Rogers <111200756+colin-rogers-dbt@users.noreply.github.com>

.changes/unreleased/Features-20240501-151859.yaml

@@ -0,0 +1,6 @@
+kind: Features
+body: Cross-database `date` macro
+time: 2024-05-01T15:18:59.292022-06:00
+custom:
+  Author: dbeatty10
+  Issue: 808

tests/functional/adapter/utils/test_utils.py

@@ -6,6 +6,7 @@
 from dbt.tests.adapter.utils.test_cast_bool_to_text import BaseCastBoolToText
 from dbt.tests.adapter.utils.test_concat import BaseConcat
 from dbt.tests.adapter.utils.test_current_timestamp import BaseCurrentTimestampNaive
+from dbt.tests.adapter.utils.test_date import BaseDate
 from dbt.tests.adapter.utils.test_dateadd import BaseDateAdd
 from dbt.tests.adapter.utils.test_datediff import BaseDateDiff
 from dbt.tests.adapter.utils.test_date_spine import BaseDateSpine
@@ -61,6 +62,10 @@ class TestCurrentTimestamp(BaseCurrentTimestampNaive):
     pass
 
 
+class TestDate(BaseDate):
+    pass
+
+
 class TestDateAdd(BaseDateAdd):
     pass