Stop double base64 encoding Dump.Manager crashdump DiagnosticData.

Google-Bug-Id:562639604
PiperOrigin-RevId: 990547426
Change-Id: I0739c1b8fe680e5eda92cd7202065f6cec6374e3

gbmcweb

diff --git a/gbmcweb b/gbmcweb
index f619f9c..921f2cd 160000
--- a/gbmcweb
+++ b/gbmcweb
@@ -1 +1 @@
-Subproject commit f619f9c721531e28ff3a2ba8ec562ab9a5c52750
+Subproject commit 921f2cd31364777aafe4021527f1481040bc1e22