fix(workspaceindex): import gitsafe under the Twigpine module path

#1149 was opened before #1105 moved the module to github.com/Twigpine/zero
and merged right after it, so its two imports of internal/gitsafe still
used the old path. Nothing provides github.com/Gitlawb/zero any more, so
main stopped building at 2ffe1831.

internal/workspaceindex/gitignore.go

@@ -7,7 +7,7 @@ import (
 	"strings"
 	"time"
 
-	"github.com/Gitlawb/zero/internal/gitsafe"
+	"github.com/Twigpine/zero/internal/gitsafe"
 )
 
 // gitIgnoredPathsTimeout bounds how long Scan waits on git before giving up and falling

internal/workspaceindex/gitignore_test.go

@@ -10,7 +10,7 @@ import (
 	"strings"
 	"testing"
 
-	"github.com/Gitlawb/zero/internal/gitsafe"
+	"github.com/Twigpine/zero/internal/gitsafe"
 )
 
 // isolateGitConfig keeps the git child processes away from the developer's real global and