CI: Fix failure when trying to move Qt x86 zip

[RytoEX]

Description

Due to recent changes to remove unnecessary x86 builds, the Qt x86 artifact no longer exists, so CI fails during release creation. Instead of assuming the file exists for all architectures, use a test and an if statement to check for possible matches.

Motivation and Context

Want to be able to make obs-deps releases.

How Has This Been Tested?

It hasn't.

Types of changes

• Bug fix (non-breaking change which fixes an issue)

Checklist:

• My code has been run through clang-format.
• I have read the contributing document.
• My code is not on the master branch.
• The code has been tested.
• All commit messages are properly formatted and commits squashed where appropriate.
• I have included updates to all appropriate documentation.