Cross-database date macro (#1011)

* Cross-database `date` macro

* Temporary dev requirements for testing

* Update changelog entry

* Revert "Temporary dev requirements for testing"

This reverts commit 7c4424d.

---------

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

.changes/unreleased/Features-20240501-151901.yaml

@@ -0,0 +1,6 @@
+kind: Features
+body: Cross-database `date` macro
+time: 2024-05-01T15:19:01.141157-06:00
+custom:
+  Author: dbeatty10
+  Issue: 1013

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 BaseCurrentTimestampAware
+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
@@ -62,6 +63,10 @@ class TestCurrentTimestamp(BaseCurrentTimestampAware):
     pass
 
 
+class TestDate(BaseDate):
+    pass
+
+
 class TestDateAdd(BaseDateAdd):
     pass