Update nginx Docker tag to v1.27.5 (#3308)

* Update nginx Docker tag to v1.27.5

| datasource | package | from   | to     |
| ---------- | ------- | ------ | ------ |
| docker     | nginx   | 1.27.4 | 1.27.5 |


Signed-off-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

* Update README

---------

Signed-off-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>
Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>
Co-authored-by: Saylor Berman <[email protected]>

Author: renovate[bot]

README.md

@@ -66,7 +66,7 @@ The following table lists the software versions NGINX Gateway Fabric supports.
 
 | NGINX Gateway Fabric | Gateway API | Kubernetes | NGINX OSS | NGINX Plus |
 |----------------------|-------------|------------|-----------|------------|
-| Edge                 | 1.2.1       | 1.25+      | 1.27.4    | R34        |
+| Edge                 | 1.2.1       | 1.25+      | 1.27.5    | R34        |
 | 1.6.2                | 1.2.1       | 1.25+      | 1.27.4    | R33        |
 | 1.6.1                | 1.2.1       | 1.25+      | 1.27.4    | R33        |
 | 1.6.0                | 1.2.1       | 1.25+      | 1.27.3    | R33        |

build/Dockerfile.nginx

@@ -1,5 +1,5 @@
 # syntax=docker/dockerfile:1.15
-FROM nginx:1.27.4-alpine-otel
+FROM nginx:1.27.5-alpine-otel
 
 ARG NJS_DIR
 ARG NGINX_CONF_DIR