python3-sphinx-rtd-theme: upgrade 1.2.2 -> 1.3.0
(From OE-Core rev: 57670c550e42748719f4e2dcc8d9809190261cbb)
Signed-off-by: Wang Mingyu <wangmy@fujitsu.com>
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>