[BUG] DeprecationWarning: Parsing dates involving a day of month without a year specified is ambiguious and fails to parse leap day.

Describe your context
Please provide us your environment, so we can easily reproduce the issue.

• replace the result of pip list | grep dash below

dash                           3.0.4

Describe the bug

When importing dash :

DeprecationWarning: Parsing dates involving a day of month without a year specified is ambiguious
and fails to parse leap day. The default behavior will change in Python 3.15
to either always raise an exception or to use a different default year (TBD).
To avoid trouble, add a specific year to the input & format.
See https://github.com/python/cpython/issues/70647.
  import dash

Expected behavior

No deprecation warning should occur.
The surprising part is that when I search for "strptime" in the dash repository, Github doesn't return any result.

Start by reproducing the warning with import dash using the reported Dash 3.0.4 environment, then inspect the repository beyond the reported strptime search and consult the linked CPython issue. Done means importing Dash no longer emits the deprecation warning, including for dates involving a leap day.