refactor: Simplify GIT_TAG line replacement logic #258

Job	Run time
updater-test-args / cancel-previous-run	5s
cli-integration (windows)	27s
updater-test-args / validate-inputs	9s
cli-integration (ubuntu)	16s
updater-create-pr / cancel-previous-run	6s
cli-integration (macos)	4m 10s
updater-create-pr / validate-inputs	7s
updater-test-args / update	11s
updater-create-pr / update	21s
updater-test-outputs	5s
	5m 57s

Provide feedback