Fix draft release workflow by giving GITHUB_TOKEN additional permissi…

…ons (#1256)

In #1201 we explicitly granted
the needed permissions to the token, and we updated the repo settings to be the most restrictive.
Now that the repo has been updated, the draft-release workflow is broken
for minor versions less than 0.18.x.

This change will allow us to continue to patch 0.17.x.

Signed-off-by: Natalie Arellano <[email protected]>

.github/workflows/draft-release.yml

@@ -6,6 +6,8 @@ on:
 jobs:
   draft-release:
     runs-on: ubuntu-latest
+    permissions:
+      contents: write
     steps:
       - uses: actions/checkout@v2
       - name: Install jq