chore: add permissions that were missed on the first pass (#2945)

Co-authored-by: otelbot <[email protected]>

Author: opentelemetrybot

.github/workflows/release-please.yml

@@ -11,6 +11,7 @@ jobs:
   release-please:
     runs-on: ubuntu-latest
     permissions:
+      contents: write # required for pushing changes
       id-token: write
     steps:
       # The logic below handles the npm publication:

.github/workflows/update-otel-deps.yaml

@@ -9,6 +9,8 @@ permissions:
 jobs:
   create-or-update-deps-pr:
     runs-on: ubuntu-latest
+    permissions:
+      contents: write # required for pushing changes
     steps:
       - name: Fork
         run: gh repo fork open-telemetry/opentelemetry-js-contrib