fix: pin poetry to version used in CI

Pin poetry to version 1.3.2, which is currently used in CI, to ensure
that all builds are consistent. Also, fix typo in `doc` group name.

Change-Id: Id0c1aa88ac7ffcc241a51c693570e87abacf7ebc
Signed-off-by: Harrison Mutai <harrison.mutai@arm.com>
1 file changed