chore(deps): update sphinx requirement from <4.0,>=3.0 to >=3.0,<5.0 (#603)

dependabot[bot] · KazuCocoa · web-flow · commit 2df9031ea837 · 2021-10-21T16:20:34.000+09:00
Updates the requirements on [sphinx](https://github.com/sphinx-doc/sphinx) to permit the latest version. - [Release notes](https://github.com/sphinx-doc/sphinx/releases) - [Changelog](https://github.com/sphinx-doc/sphinx/blob/4.x/CHANGES) - [Commits](sphinx-doc/sphinx@v3.0.0...v4.0.0) Signed-off-by: dependabot[bot] <support@github.com> Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com> Co-authored-by: Kazuaki Matsuo <fly.49.89.over@gmail.com>
diff --git a/docs/requirements.txt b/docs/requirements.txt
@@ -1,2 +1,2 @@
-sphinx >= 3.0, <4.0
+sphinx >= 4.0, < 5.0
 sphinx_rtd_theme < 2.0

Original file line number	Diff line number	Diff line change
`@@ -1,2 +1,2 @@`
`1`		`-sphinx >= 3.0, <4.0`
	`1`	`+sphinx >= 4.0, < 5.0`
`2`	`2`	`sphinx_rtd_theme < 2.0`