Update debian Docker tag to v13.1

Author: renovate[bot]

scanners/screenshooter/scanner/Dockerfile

@@ -4,7 +4,7 @@
 
 # This is using debian rather than alpine, as firefox on alpine seems to be missing some crucial fonts.
 # This lets the screenshots taken on alpine look weird
-FROM debian:13.0
+FROM debian:13.1
 RUN apt-get update && apt-get install firefox-esr -y
 RUN groupadd -g 1001 screenshooter \
     && useradd -M -u 1001 -g 1001 securecodebox