[llvm-branch-commits] [lld] [LLD] [docs] Add a release note for the SOURCE_DATE_EPOCH support (PR #81388)

[Martin Storsjö via llvm-branch-commits]

mstorsjo wrote:

This goes along with/after #81384 (which is approved but not yet merged).

https://github.com/llvm/llvm-project/pull/81388