all: increase continous testing timeout to 45m

Change-Id: I329d17172b42b4cffd2c4d657122cf669306bb31
Reviewed-on: https://code-review.googlesource.com/c/gocloud/+/53512
Reviewed-by: Tyler Bui-Palsulich <tbp@google.com>
Reviewed-by: kokoro <noreply+kokoro@google.com>
diff --git a/internal/kokoro/continuous.sh b/internal/kokoro/continuous.sh
index 3ec34f9..9656f45 100755
--- a/internal/kokoro/continuous.sh
+++ b/internal/kokoro/continuous.sh
@@ -58,7 +58,7 @@
 # Run tests and tee output to log file, to be pushed to GCS as artifact.
 for i in `find . -name go.mod`; do
   pushd `dirname $i`;
-    go test -race -v -timeout 30m ./... 2>&1 \
+    go test -race -v -timeout 45m ./... 2>&1 \
       | tee sponge_log.log
     # Takes the kokoro output log (raw stdout) and creates a machine-parseable
     # xUnit XML file.