Reduce build timeout to 120m.

Build currently takes ~60m, so this is double the time expected.

Signed-off-by: Tim 'mithro' Ansell <tansell@google.com>

open_pdks/continous.cfg

diff --git a/open_pdks/continous.cfg b/open_pdks/continous.cfg
index 2e87515..f55326e 100644
--- a/open_pdks/continous.cfg
+++ b/open_pdks/continous.cfg
@@ -2,7 +2,7 @@
 
 build_file: "builder/open_pdks/run.sh"
 
-timeout_mins: 4320
+timeout_mins: 120
 
 action {
   define_artifacts {