Bump sphinx-rtd-theme from 3.0.0 to 3.0.1 (#510)

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

aiosmtpd/docs/requirements.txt

@@ -3,4 +3,4 @@
 ### Sphinx deps
 sphinx==7.4.6
 sphinx-autofixture==0.4.0
-sphinx_rtd_theme==3.0.0
+sphinx_rtd_theme==3.0.1