Chore: Update global-jjb to the lastest v0.75.1

- Pull in fix to active virtualenv while capturing instance
  metadata.

Signed-off-by: Anil Belur <abelur@linuxfoundation.org>
Change-Id: I577ffc737e4c7042d42f0bb89d51ec2bafa1db50

diff --git a/global-jjb b/global-jjb
index cc281dac5f29fec045c7332094d55faa98acd924..8b1e8a7f02cbf2a43c038cd319077b67e3d39a93 160000 (submodule)
--- a/global-jjb
+++ b/global-jjb
@@ -1 +1 @@
-Subproject commit cc281dac5f29fec045c7332094d55faa98acd924
+Subproject commit 8b1e8a7f02cbf2a43c038cd319077b67e3d39a93