Update LICENSE.txt to reflect new paths (#28241) #1

Job	Run time
master-ci / Check serialization methods for hot structs	22s
master-ci / Check go mod tidy	32s
master-ci / Check mocks	1m 58s
master-ci / Check style	2m 30s
master-ci / golangci-lint	4m 12s
master-ci / Vet API	2m 50s
master-ci / Check migration files	12s
master-ci / Generate email templates	24s
master-ci / Check store layers	23s
master-ci / Check app layers	43s
master-ci / Check mmctl docs	1m 44s
master-ci / MySQL to PostgreSQL Migration / MySQL -> Postgres Migration	6m 25s
master-ci / Build mattermost server app	1s
master-ci / Postgres with binary parameters	0s
master-ci / Run mmctl tests / mmctl	34m 43s
master-ci / MySQL / MySQL	1h 25m 40s
master-ci / Postgres / Postgres	1h 18m 14s
	3h 40m 53s

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