gnu: python-pypika-tortoise: Update to 0.1.6.

* gnu/packages/databases.scm (python-pypika-tortoise): Update to 0.1.6;
[build-system]: switch to pyproject-build-system;
[native-inputs]: add poetry.

Signed-off-by: Ludovic Courtès <ludo@gnu.org>

gnu/packages/databases.scm

@@ -2973,14 +2973,16 @@ can autogenerate peewee models using @code{pwiz}, a model generator.")
 (define-public python-pypika-tortoise
   (package
     (name "python-pypika-tortoise")
-    (version "0.1.5")
+    (version "0.1.6")
     (source
      (origin
        (method url-fetch)
        (uri (pypi-uri "pypika-tortoise" version))
        (sha256
-        (base32 "0j20574s2yrq8d7fav3816vj1nfpihkm2mj8jzh2ank4zixp8brf"))))
-    (build-system python-build-system)
+        (base32 "0dmzpsnlqjjz0vm0r9xjk69xfsm235bpnk3jccr8ww4s8y7qc0nq"))))
+    (build-system pyproject-build-system)
+    (native-inputs
+     (list poetry))
     (home-page "https://github.com/tortoise/pypika-tortoise")
     (synopsis "Pypika fork for tortoise-orm")
     (description "Pypika-tortoise is a fork of pypika which has been