Update Zulip 'send message' action to latest version

Author: SeanTAllen

.github/workflows/changelog-bot.yml

@@ -23,7 +23,7 @@ jobs:
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
       - name: Send alert on failure
         if: ${{ failure() }}
-        uses: zulip/github-actions-zulip/send-message@08b6fbd07f5834e5b930a85bc7740e9fd44ab2e7
+        uses: zulip/github-actions-zulip/send-message@e4c8f27c732ba9bd98ac6be0583096dea82feea5
         with:
           api-key: ${{ secrets.ZULIP_SCHEDULED_JOB_FAILURE_API_KEY }}
           email: ${{ secrets.ZULIP_SCHEDULED_JOB_FAILURE_EMAIL }}

.github/workflows/release-notes.yml

@@ -24,7 +24,7 @@ jobs:
           API_CREDENTIALS: ${{ secrets.GITHUB_TOKEN }}
       - name: Send alert on failure
         if: ${{ failure() }}
-        uses: zulip/github-actions-zulip/send-message@08b6fbd07f5834e5b930a85bc7740e9fd44ab2e7
+        uses: zulip/github-actions-zulip/send-message@e4c8f27c732ba9bd98ac6be0583096dea82feea5
         with:
           api-key: ${{ secrets.ZULIP_SCHEDULED_JOB_FAILURE_API_KEY }}
           email: ${{ secrets.ZULIP_SCHEDULED_JOB_FAILURE_EMAIL }}