fix: correct import to not reference __init__ (#3241) (#3247)

* Correct import to not reference `__init__`

This will otherwise bring up the following error from mypy when type checking a
code base that import ddtrace:

> Source file found twice under different module names:
> "ddtrace.internal.utils" and "ddtrace.internal.utils.__init__"

This error didn't occur with version 0.57.3 but did with 0.58.0.

* Add entry for release notes

* Update releasenotes/notes/fix-utils-import-c0f574d76de77261.yaml

Co-authored-by: Brett Langdon <[email protected]>
Co-authored-by: Brett Langdon <[email protected]>
(cherry picked from commit 8be9e2a)

Co-authored-by: Jeppe Fihl-Pearson <[email protected]>
Co-authored-by: Brett Langdon <[email protected]>

Author: 3 people

ddtrace/utils/__init__.py

@@ -1,5 +1,5 @@
-from ..internal.utils.__init__ import ArgumentError  # noqa
-from ..internal.utils.__init__ import get_argument_value  # noqa
+from ..internal.utils import ArgumentError  # noqa
+from ..internal.utils import get_argument_value  # noqa
 from ..internal.utils.deprecation import deprecation
 
 

releasenotes/notes/fix-utils-import-c0f574d76de77261.yaml

@@ -0,0 +1,4 @@
+---
+fixes:
+  - |
+    Fixes import path to not reference ``__init__``. This could otherwise be a problem for ``mypy``.