bump: blowfish/hugo/nginx version

Dockerfile

@@ -1,5 +1,5 @@
 # Build Stage
-FROM hugomods/hugo:0.160.1 AS build
+FROM hugomods/hugo:0.161.1 AS build
 
 ARG BLOWFISH_VERSION
 
@@ -7,11 +7,11 @@ WORKDIR /opt/blog
 COPY . /opt/blog/
 
 RUN git submodule update --init --recursive && \
-    git -C themes/blowfish/ checkout v2.102.0
+    git -C themes/blowfish/ checkout v2.103.0
 RUN hugo
 
 # Publish Stage
-FROM nginx:1.29-alpine
+FROM nginx:1.31-alpine
 
 WORKDIR /usr/share/nginx/html
 COPY --from=build /opt/blog/public /usr/share/nginx/html/