chore: [StepSecurity] Apply security best practices (#545)

Co-authored-by: stepsecurity-app[bot] <188008098+stepsecurity-app[bot]@users.noreply.github.com>
Co-authored-by: Tyler McDonald <tyler@hgraph.io>
Co-authored-by: Tyler <tyler+hgraphql@hgraph.io>

Author: 3 people

.github/workflows/publish-canary.yml

@@ -6,6 +6,9 @@ on:
       - canary
       - introduce-v2
 
+permissions:
+  contents: read
+
 jobs:
   publish-canary:
     name: Publish Canary

.github/workflows/publish.yml

@@ -3,6 +3,9 @@ on:
   release:
     types:
       - published
+permissions:
+  contents: read
+
 jobs:
   publish:
     name: publish

.github/workflows/test.yml

@@ -4,6 +4,9 @@ on:
   pull_request:
   push:
     branches: [main]
+permissions:
+  contents: read
+
 jobs:
   test-node:
     name: Unit Tests