fix: remove all permissions specifications

Author: vancauwe

.github/workflows/build-images-manifests.yml

@@ -15,9 +15,6 @@ jobs:
   build-platform-images:
     name: Build ${{ matrix.image }} (${{ matrix.platform }})
     runs-on: ${{ matrix.runner }}
-    permissions:
-      id-token: write
-      contents: read
     strategy:
       matrix:
         include:
@@ -73,9 +70,6 @@ jobs:
     name: Create Multi-Platform Manifests
     runs-on: ubuntu-latest
     needs: build-platform-images
-    permissions:
-      id-token: write
-      contents: read
     steps:
       # SDSC ADD-ON
       # https://github.com/docker/login-action