chore(deps): update bitnami/nginx docker tag to v1.27.3-debian-12-r0

Author: renovate[bot]

man/Dockerfile

@@ -7,7 +7,7 @@ COPY knot8.1 header.html footer.html /
 RUN (cat /header.html; mandoc -Thtml -Ostyle=/mandoc.css -O fragment /knot8.1; cat /footer.html )>/app/index.html
 
 
-FROM bitnami/nginx:1.22-debian-10@sha256:0766f88508f8d76d871f4d5dbc73693cd90fa36ef16e914d7320871406798132
+FROM bitnami/nginx:1.27.3-debian-12-r0@sha256:ac35708f13b3d8b58ca17367ac16b40b20286890a71e3e3a2aaa3a942e3c4877
 
 COPY --from=build /app/index.html /app/
 COPY mandoc.css Inconsolata.woff2 /app/