Migrate upper functional job to Python 3.13

... because Python 3.13 is now part of the tested runtimes.

Note that installation of PCRE(3) package is now limited to doc profile
because it's required by whereto, which is used only in doc target of
tox. This is required because the package is no longer available in
Debian Trixie .

Depends-on: https://review.opendev.org/960639
Change-Id: I7c27dde32dde0d6f62041963d920f4b626d90c2e
Signed-off-by: Takashi Kajinami <kajinamit@oss.nttdata.com>

.zuul.yaml

@@ -23,7 +23,7 @@
               - ^doc/.*$
               - ^releasenotes/.*$
               - ^reno.yaml$
-        - openstack-tox-functional-py312:
+        - openstack-tox-functional-py313:
             irrelevant-files: *functional-irrelevant-files
         - cinder-rally-task:
             voting: false

bindep.txt

@@ -34,7 +34,8 @@ python3-devel [platform:rpm test]
 libpq-dev [platform:dpkg]
 thin-provisioning-tools [platform:debian]
 libxml2-dev [platform:dpkg test]
-libpcre3-dev [platform:dpkg test]
+libpcre3-dev [platform:dpkg doc]
+libpcre-devel [platform:rpm doc]
 libxslt-devel [platform:rpm test]
 libxslt1-dev [platform:dpkg test]
 cryptsetup [platform:rpm]