pr-upload: use PkgVersion.parse instead of Version.new

[dawidd6]

• Have you followed the guidelines in our Contributing document?
• Have you checked to ensure there aren't other open Pull Requests for the same change?
• Have you added an explanation of what your changes do and why you'd like us to include them?
• Have you written new tests for your changes? Here's an example.
• Have you successfully run brew style with your changes locally?
• Have you successfully run brew tests with your changes locally?

---

Error: Bottles are for spdlog 1.7.0_1 but formula is version 1.7.0_1!

[jonchang]

Looks like I messed up in the last PR and forgot about PkgVersion:

> PkgVersion.parse "1.7.0_1"
=> #<PkgVersion:0x00007fd16411a188 @version=#<Version:0x00007fd16411a1b0 @version="1.7.0">, @revision=1>
> Version.new "1.7.0_1"
=> #<Version:0x00007fd1651fa840 @version="1.7.0_1">

Changing it should fix the problem once and for all...

[jonchang]

I can confirm that this works but as the Bintray API is down the --online test is failing, and until it comes back up it actually doesn't matter if this is merged or not 🤷

[jonchang]

Thanks @dawidd6 !