fix: Correct BOOKSTACK_VERSION in Dockerfile

Author: andremohr

Dockerfile

@@ -1,5 +1,5 @@
 FROM alpine:3 as bookstack
-ENV BOOKSTACK_VERSION=23.02.3
+ENV BOOKSTACK_VERSION=24.02.3
 RUN apk add --no-cache curl tar
 RUN set -x; \
     curl -SL -o bookstack.tar.gz https://github.com/BookStackApp/BookStack/archive/v${BOOKSTACK_VERSION}.tar.gz  \