add token permissions for github workflows.

Author: freibold

.github/workflows/continuous.yml

@@ -3,6 +3,8 @@
 
 name: continuous
 
+permissions: read-all
+
 on: [push, workflow_dispatch]
 
 jobs:

.github/workflows/integrate.yml

@@ -3,6 +3,8 @@
 
 name: integrate
 
+permissions: read-all
+
 # same as nightly...
 on:
   schedule:

.github/workflows/nightly.yml

@@ -3,6 +3,8 @@
 
 name: nightly
 
+permissions: read-all
+
 on:
   schedule:
     - cron:  '00 00 * * *'

.github/workflows/performance.yml

@@ -3,6 +3,8 @@
 
 name: performance
 
+permissions: read-all
+
 on: 
   schedule:
     - cron:  '00 01 * * *'

.github/workflows/release.yml

@@ -3,6 +3,8 @@
 
 name: release
 
+permissions: read-all
+
 on:
   schedule:
     - cron:  '00 00 * * *'