Fix error thrown when updating dependencies in poetry non-package mode

[ewilliamson-patreon]

fixes #9399

When we have package-mode=false the name field in pyproject.toml is optional.

Before this change, that means when we test library? we will get an error

2024/04/01 14:34:23 ERROR <job_808235580> undefined method `downcase' for nil:NilClass
updater | 
updater |         name.downcase.gsub(/[-_.]+/, "-").gsub(extras_regex, "")
updater |             ^^^^^^^^^

because the nil is passed down.

Verification

Added a test for this behavious that failed before this change.

After this change we early out on a nil name (because the only situation with a nil name is package-mode=false)

Other Changes

Unfortunately had to modify the existing package-mode=false specfile as the python dependency version with || would throw errors in parsing the python dependency, so will need to be fixed separatly

Gem::Requirement::BadRequirementError:
       Illformed requirement [">= 3.6 || ^3.7"]
```https://gist.github.com/ewilliamson-patreon/142c18532ef04f919f79819af65c4949