Finish moving github actions to node 18 (#6554)

Author: snowystinger

.github/actions/branch/action.yml

@@ -1,5 +1,5 @@
 name: 'Branch from fork'
 description: 'creates a branch based off PR from fork'
 runs:
-  using: 'node16'
+  using: 'node18'
   main: 'index.js'

.github/actions/permissions/action.yml

@@ -1,5 +1,5 @@
 name: 'Check permissions'
 description: 'Checks if commentor has write access or above'
 runs:
-  using: 'node16'
+  using: 'node18'
   main: 'index.js'