backblaze-b2: adding missing runtime dependencies.

[MIvanchev]

Testing the changes

• I tested the changes in this PR: NO

Fixes #53257.

[classabbyamp]

don't put these one-per-line, and don't use \s for continuations

also, some of these do not belong on this package, as they are really dependencies of dependencies.

the missing dependencies, as found by #53326:

=> backblaze-b2-4.2.0_1: running pre-pkg hook: 06-verify-python-deps ...
   PYTHON: py3:argcomplete <-> python3-argcomplete NOT IN depends PLEASE FIX!
   PYTHON: py3:arrow <-> python3-Arrow
   PYTHON: py3:b2sdk <-> python3-b2sdk
   PYTHON: py3:docutils <-> python3-docutils
   PYTHON: py3:phx-class-registry <-> python3-phx-class-registry
   PYTHON: py3:rst2ansi <-> python3-rst2ansi
   PYTHON: py3:tabulate <-> python3-tabulate
   PYTHON: py3:tqdm <-> python3-tqdm NOT IN depends PLEASE FIX!
   PYTHON: py3:platformdirs <-> python3-platformdirs NOT IN depends PLEASE FIX!

=> python3-b2sdk-2.6.0_1: running pre-pkg hook: 06-verify-python-deps ...
   PYTHON: py3:annotated-types <-> python3-annotated-types NOT IN depends PLEASE FIX!
   PYTHON: py3:logfury <-> python3-logfury
   PYTHON: py3:requests <-> python3-requests