fix(updater): don't override user provided headers

[Legend-Master]

Fix #2618

[github-actions]

Package Changes Through 98055d3

There are 4 changes which include log with minor, log-js with minor, updater with patch, updater-js with patch

Planned Package Versions

The following package releases are the planned based on the context of changes in this pull request.

package	current	next
api-example	2.0.24	2.0.25
api-example-js	2.0.20	2.0.21
log	2.3.1	2.4.0
log-js	2.3.1	2.4.0
updater	2.7.0	2.7.1
updater-js	2.7.0	2.7.1

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