Trim plugin version string (#889)

This PR is a very small change that fixes the string pattern that reads
the rojo version from `Version.txt`. Currently this reads an extra
new-line character which makes reading the version text in the plugin
difficult.

It seems the rust side of things already trims the string when
comparing, but the lua side does not.

Current:

![pO6gtOXAZq](https://github.com/rojo-rbx/rojo/assets/6201941/1a03fced-f2b5-4a4e-a82d-e11fb0a52af7)

Fix:

![RobloxStudioBeta_GHmiJKAoa3](https://github.com/rojo-rbx/rojo/assets/6201941/3ce711df-fdc6-4f20-8771-5f5118ee013f)

Apologies if I skipped over some process of submitting a bug and / or am
basing on the wrong branch etc.

plugin/src/Config.lua

@@ -3,7 +3,8 @@ local strict = require(script.Parent.strict)
 local isDevBuild = script.Parent.Parent:FindFirstChild("ROJO_DEV_BUILD") ~= nil
 
 local Version = script.Parent.Parent.Version
-local major, minor, patch, metadata = Version.Value:match("^(%d+)%.(%d+)%.(%d+)(.*)$")
+local trimmedVersionValue = Version.Value:gsub("^%s+", ""):gsub("%s+$", "")
+local major, minor, patch, metadata = trimmedVersionValue:match("^(%d+)%.(%d+)%.(%d+)(.*)$")
 
 local realVersion = { major, minor, patch, metadata }
 for i = 1, 3 do