Use 8-core, 32GB runners for testing and faster builds (#1524)

* swap 3 jobs to 8 core runners

* 16 core test

* test 4 core

* back to 8 core

.github/workflows/build-unstable.yml

@@ -20,7 +20,7 @@ on:
 
 jobs:
     BuildAndTest:
-        runs-on: ubuntu-latest
+        runs-on: ubuntu-latest-8core
         defaults:
             run:
                 working-directory: pyscriptjs

.github/workflows/prepare-release.yml

@@ -15,7 +15,7 @@ defaults:
 
 jobs:
     build:
-        runs-on: ubuntu-latest
+        runs-on: ubuntu-latest-8core
         steps:
             - name: Checkout
               uses: actions/checkout@v3

.github/workflows/publish-release.yml

@@ -14,7 +14,7 @@ defaults:
 
 jobs:
     build:
-        runs-on: ubuntu-latest
+        runs-on: ubuntu-latest-8core
         permissions:
             contents: read
             id-token: write