*: git.monogon.dev -> source.monogon.dev

This implements T882, setting our (virtual) GOPATH to source.monogon.dev
for this repository.

Test Plan: Refactor, CI only.

X-Origin-Diff: phab/D686
GitOrigin-RevId: c5e2309089948ffc3a98e68e2e0e1cbb157d3a36
diff --git a/metropolis/pkg/logtree/logtree_publisher.go b/metropolis/pkg/logtree/logtree_publisher.go
index 3e2711a..d4d35ff 100644
--- a/metropolis/pkg/logtree/logtree_publisher.go
+++ b/metropolis/pkg/logtree/logtree_publisher.go
@@ -23,7 +23,7 @@
 	"strings"
 	"time"
 
-	"git.monogon.dev/source/nexantic.git/metropolis/pkg/logbuffer"
+	"source.monogon.dev/metropolis/pkg/logbuffer"
 )
 
 // LeveledFor returns a LeveledLogger publishing interface for a given DN. An error may be returned if the DN is