internal/lsp/debug: update version number for v0.6.0

Change-Id: I428602bb1fbf886f949ecf12fa4d18818c5051ba
Reviewed-on: https://go-review.googlesource.com/c/tools/+/277312
Trust: Rebecca Stambler <rstambler@golang.org>
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
Reviewed-by: Robert Findley <rfindley@google.com>
Reviewed-by: Heschi Kreinick <heschi@google.com>
Reviewed-by: Peter Weinberger <pjw@google.com>
TryBot-Result: Go Bot <gobot@golang.org>
diff --git a/internal/lsp/debug/info.go b/internal/lsp/debug/info.go
index f01c8dd..8cda511 100644
--- a/internal/lsp/debug/info.go
+++ b/internal/lsp/debug/info.go
@@ -26,7 +26,7 @@
 )
 
 // Version is a manually-updated mechanism for tracking versions.
-var Version = "master"
+var Version = "v0.6.0"
 
 // ServerVersion is the format used by gopls to report its version to the
 // client. This format is structured so that the client can parse it easily.