Reduce workflow permissions (#748)

Reduce workflow permissions to the minimum required.

Co-authored-by: Scott Anderson <662325+scottanderson@users.noreply.github.com>

.github/workflows/ci.yml

@@ -1,5 +1,8 @@
 name: 🧪 CI
 on: [push, pull_request]
+
+permissions: {}
+
 jobs:
   build:
     name: Build

.github/workflows/deploy.yml

@@ -34,6 +34,8 @@ on:
     branches:
       - "*"
 
+permissions: {}
+
 jobs:
   deploy:
     # Don't deploy on push if this is a fork

.github/workflows/eslint.yml

@@ -5,6 +5,8 @@ on:
   push:
     branches: [main]
 
+permissions: {}
+
 jobs:
   eslint:
     name: Check

.github/workflows/prettier.yml

@@ -5,6 +5,8 @@ on:
   push:
     branches: [main]
 
+permissions: {}
+
 jobs:
   prettier:
     name: Check