*: 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_entry.go b/metropolis/pkg/logtree/logtree_entry.go
index 321406d..a1c2d62 100644
--- a/metropolis/pkg/logtree/logtree_entry.go
+++ b/metropolis/pkg/logtree/logtree_entry.go
@@ -20,8 +20,8 @@
 	"fmt"
 	"strings"
 
-	"git.monogon.dev/source/nexantic.git/metropolis/pkg/logbuffer"
-	apb "git.monogon.dev/source/nexantic.git/metropolis/proto/api"
+	"source.monogon.dev/metropolis/pkg/logbuffer"
+	apb "source.monogon.dev/metropolis/proto/api"
 )
 
 // LogEntry contains a log entry, combining both leveled and raw logging into a single stream of events. A LogEntry