Update Janus download URL (#1900)

Resolves tiny-pilot/tinypilot-pro#1578

This PR downloads Janus from https://archive.debian.org instead of
http://ftp.us.debian.org (!).

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Author: jdeanwallace

bundler/create-bundle

@@ -74,7 +74,7 @@ readonly BUNDLE_FILENAME="tinypilot-${TINYPILOT_VARIANT}-${TIMESTAMP}-${TINYPILO
 # upstream and verify that the diff is the same as before.
 wget \
   --directory-prefix="${BUNDLE_DIR}" \
-  http://ftp.us.debian.org/debian/pool/main/j/janus/janus_1.0.1-1~bpo11+1_armhf.deb
+  https://archive.debian.org/debian/pool/main/j/janus/janus_1.0.1-1~bpo11+1_armhf.deb
 
 # Download uStreamer Debian package.
 wget \