Bump towncrier from 24.7.1 to 24.8.0 (#2032)

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Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
Co-authored-by: davfsa <davfsa@gmail.com>

dev-requirements/towncrier.txt

@@ -1 +1 @@
-towncrier==24.7.1
+towncrier==24.8.0

pyproject.toml

@@ -125,9 +125,6 @@ type = [
     { name = "Bugfixes",                    directory = "bugfix",        showcontent = true },
     { name = "Documentation Improvements",  directory = "documentation", showcontent = true },
 ]
-# TODO: Remove this when the next version to 24.7.1 is released
-# see: https://github.com/twisted/towncrier/pull/639
-ignore = [".template.md.jinja"]
 
 [tool.mypy]
 # general settings