Update to v0.14.0-rc3 (#20)

* Update packages.dhall to prepare-0.14 bootstrap

* Update CI to use v0.14.0-rc3 PS release

Author: JordanMartinez

.github/workflows/ci.yml

@@ -15,6 +15,8 @@ jobs:
 
       - name: Set up PureScript toolchain
         uses: purescript-contrib/setup-purescript@main
+        with:
+          purescript: "0.14.0-rc3"
 
       - name: Cache PureScript dependencies
         uses: actions/cache@v2

packages.dhall

@@ -1,4 +1,4 @@
 let upstream =
-      https://github.com/purescript/package-sets/releases/download/psc-0.13.8-20200822/packages.dhall sha256:b4f151f1af4c5cb6bf5437489f4231fbdd92792deaf32971e6bcb0047b3dd1f8
+      https://raw.githubusercontent.com/purescript/package-sets/prepare-0.14/src/packages.dhall sha256:f9b49a477fcd822a7119413b689123f8e1694b0008c156971f1931751079a56f
 
 in  upstream