remove [sources] from test/Project.toml to test PR code in Meshes.jl workflow (#4)

Author: cserteGT3

.github/workflows/CI.yml

@@ -1,5 +1,8 @@
 name: CI
 on:
+  pull_request:
+    branches:
+      - main
   push:
     branches:
       - main

test/Project.toml

@@ -12,8 +12,5 @@ TestItemRunner = "f8b46487-2199-4994-9208-9a1283c18c0a"
 TestItems = "1c621080-faea-4a02-84b6-bbd5e436b8fe"
 Unitful = "1986cc42-f94f-5a68-af5c-568840ba703d"
 
-[sources]
-Meshes = {rev = "master", url = "https://github.com/JuliaGeometry/Meshes.jl.git"}
-
 [compat]
 CairoMakie = "=0.15.11"