Replace obsolete PCRE packages

pcre3 was removed from recent debian-based releases (eg. Trixie[1]),
while RHEL10/CentOS Stream 10 no longer ships pcre in favor of pcre2.

Use the latest whereto library release (0.5.0) which uses pcre2
instead.

[1] https://lists.debian.org/debian-devel/2021/11/msg00176.html

Depends-on: https://review.opendev.org/c/openstack/requirements/+/971428
Change-Id: I1ea84f699cd59d29970dc8fbf5f403cae2435131
Signed-off-by: Takashi Kajinami <kajinamit@oss.nttdata.com>

bindep.txt

@@ -3,5 +3,5 @@
 # see https://docs.openstack.org/infra/bindep/ for additional information.
 
 fonts-dejavu-core [platform:dpkg]
-libpcre3-dev [platform:dpkg !platform:debian-trixie]
-pcre-devel [platform:rpm]
+libpcre2-dev [platform:dpkg]
+pcre2-devel [platform:rpm]

test-requirements.txt

@@ -4,7 +4,7 @@ PyYAML>=3.1.0
 yamllint>=0.5.2
 requests-cache
 hacking~=6.0.0 # Apache-2.0
-whereto>=0.3.0  # Apache-2.0
+whereto>=0.5.0  # Apache-2.0
 
 fixtures>=3.0.0 # Apache-2.0/BSD
 python-subunit>=0.0.18 # Apache-2.0/BSD