workflows: adjust permissions in releases (#9530) (#9548)

https://github.com/mattermost/mattermost-mobile/actions/runs/22089238110
(cherry picked from commit 36439bd)

Co-authored-by: Nuno Simões <nasimoes@aiven.io>

Author: mattermost-build

.github/workflows/build-ios-release.yml

@@ -75,6 +75,9 @@ jobs:
     if: ${{ !contains(github.ref_name , 'release-ios') }}
     needs:
       - test
+    permissions:
+      id-token: write
+      contents: read
     steps:
       - name: ci/checkout-repo
         uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2