ci: chroot: add write permission

Author: frank-w

.github/workflows/chroot.yml

@@ -11,7 +11,8 @@ jobs:
   build-chroot:
     # The type of runner that the job will run on
     runs-on: ubuntu-latest
-    #runs-on: ubuntu-18.04
+    permissions:
+      contents: write  # for softprops/action-gh-release to create GitHub release
 
     # Steps represent a sequence of tasks that will be executed as part of the job
     steps: