Remove permissions settings from the release workflow

The workflow should work even without it.

.github/workflows/release-management.yml

@@ -4,9 +4,6 @@ on:
   push:
     branches: [ master ]
 
-permissions:
-  contents: read
-
 jobs:
   test_and_build:
     name: Test and build
@@ -49,8 +46,6 @@ jobs:
 
   update_release_draft:
     name: Update release draft
-    permissions:
-      contents: write
     needs: [test_and_build]
     if: needs.test_and_build.outputs.version_changed == 'false'
     runs-on: ubuntu-20.04
@@ -111,8 +106,6 @@ jobs:
 
   deploy_docs:
     name: Deploy docs
-    permissions:
-      contents: write
     needs: [test_and_build, publish_release_draft_on_version_bump]
     if: needs.test_and_build.outputs.version_changed == 'true'
     runs-on: ubuntu-20.04