update permissions on workflow actions

Author: puredanger

.github/workflows/doc-build.yml

@@ -1,5 +1,8 @@
 name: Build API Docs
 
+permissions:
+  contents: write
+
 on:
   workflow_dispatch:
 

.github/workflows/release.yml

@@ -1,5 +1,8 @@
 name: Release on demand
 
+permissions:
+  contents: write
+
 on:
   workflow_dispatch:
     inputs:

.github/workflows/snapshot.yml

@@ -1,5 +1,8 @@
 name: Snapshot on demand
 
+permissions:
+  contents: read
+
 on: [workflow_dispatch]
 
 jobs:

.github/workflows/test.yml

@@ -1,5 +1,8 @@
 name: Test
 
+permissions:
+  contents: read
+
 on: [push]
 
 jobs: