internal/lsp/cache: prevent version from including line break
internal/lsp/cache: prevent version from including line break

Change-Id: I3caf8900039eaff9676c5a4040e693e52590d417
Reviewed-on: https://go-review.googlesource.com/c/tools/+/259418
Reviewed-by: Heschi Kreinick <e89ab2b172855aa0ad01c40c4d8a3535a61ac68a@google.com>
Trust: Rebecca Stambler <d7cf11e5f299d88ea8348366a9fc4f7c335c3afa@golang.org>
Run-TryBot: Rebecca Stambler <d7cf11e5f299d88ea8348366a9fc4f7c335c3afa@golang.org>
gopls-CI: kokoro <2ac7b1f3fa578934c95181d4272be0d3bca00121@google.com>

golang/tools,golang/tools,golang/tools,golang/tools,golang/tools