Chart: add missing tpl for SA annotations

[Aakcht]

In Airflow Helm Chart 1.21.0 tpl call for service account annotations was added, but for some reason not for all service accounts. This PR adds it for remaining service accounts.

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[github-actions]

Backport failed to create: chart/v1-2x-test. View the failure log Run details

Note: As of Merging PRs targeted for Airflow 3.X
the committer who merges the PR is responsible for backporting the PRs that are bug fixes (generally speaking) to the maintenance branches.

In matter of doubt please ask in #release-management Slack channel.

Status	Branch	Result
❌	chart/v1-2x-test

You can attempt to backport this manually by running:

cherry_picker ac59ee0 chart/v1-2x-test

This should apply the commit to the chart/v1-2x-test branch and leave the commit in conflict state marking
the files that need manual conflict resolution.

After you have resolved the conflicts, you can continue the backport process by running:

cherry_picker --continue

If you don't have cherry-picker installed, see the installation guide.