apt update before installing packages

Bug: 363237196
Test: run with kokoro
Change-Id: I66c8d81b7a99d4519da62690cfd274824ede2e43
diff --git a/build/debian/build.sh b/build/debian/build.sh
index d85f384..e7e44f2 100755
--- a/build/debian/build.sh
+++ b/build/debian/build.sh
@@ -34,6 +34,7 @@
 }
 
 install_prerequisites() {
+	apt update
 	DEBIAN_FRONTEND=noninteractive \
 	apt install --no-install-recommends --assume-yes \
 		ca-certificates \
@@ -102,4 +103,4 @@
 install_prerequisites
 download_debian_cloud_image
 copy_android_config
-run_fai
\ No newline at end of file
+run_fai