fix: Dockerfile to reduce vulnerabilities

The following vulnerabilities are fixed with an upgrade:
- https://snyk.io/vuln/SNYK-ALPINE319-EXPAT-7908400
- https://snyk.io/vuln/SNYK-ALPINE319-EXPAT-7908409
- https://snyk.io/vuln/SNYK-ALPINE319-LIBXML2-9360940
- https://snyk.io/vuln/SNYK-ALPINE319-OPENSSL-7895536
- https://snyk.io/vuln/SNYK-ALPINE319-OPENSSL-7895536

Author: snyk-bot

Dockerfile

@@ -23,7 +23,7 @@ RUN cargo install mdbook --version "${MDBOOK_VERSION}" --target "${ARC}"
 
 RUN mdbook build
 
-FROM nginx:1.25-alpine
+FROM nginx:1.29.3-alpine
 
 ARG DATE_CREATED