Log Message:
py-mako: update to 1.3.8.

.. changelog::
    :version: 1.3.8
    :released: Sat Dec 7 2024

    .. change::
        :tags: bug, lexer
        :tickets: 415, 140

        Reverted the fix for :ticket:`140` released in Mako 1.3.7 as it produced
        regressions in existing user code.

.. changelog::
    :version: 1.3.7 (yanked)
    :released: Tue Dec 3 2024

    .. change::
        :tags: bug, lexer, codegen
        :tickets: 140

        During the lexical analysis phase, add an additional prefix for undeclared
        identifiers that have the same name as built-in flags, and determine the
        final filter to be used during the code generation phase based on the
        context provided by the user. Pull request by Hai Zhu.

    .. change::
        :tags: bug, lexer
        :tickets: 400, 401

        Support the direct passing of dictionary literals when calling functions
        and fix the errors caused by nested braces.   This revises the fix that was
        released in 1.3.4 and then reverted in 1.3.5. Pull request by Hai Zhu and
        Jose Galvez.