fix: Dockerfile to reduce vulnerabilities

The following vulnerabilities are fixed with an upgrade:
- https://snyk.io/vuln/SNYK-ALPINE318-EXPAT-7908292
- https://snyk.io/vuln/SNYK-ALPINE318-EXPAT-7908293
- https://snyk.io/vuln/SNYK-ALPINE318-CURL-7569015
- https://snyk.io/vuln/SNYK-ALPINE318-CURL-7569015
- https://snyk.io/vuln/SNYK-ALPINE318-EXPAT-7908294

Dockerfile

@@ -2,7 +2,7 @@
 # We don't declare them here — take a look at our docs.
 # https://github.com/swagger-api/swagger-ui/blob/master/docs/usage/configuration.md
 
-FROM nginx:1.25.4-alpine
+FROM nginx:1.26.2-alpine
 
 RUN apk add "nodejs"