build(deps): bump php from 8.5.3-cli to 8.5.6-cli

Bumps php from 8.5.3-cli to 8.5.6-cli.

---
updated-dependencies:
- dependency-name: php
  dependency-version: 8.5.6-cli
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

Dockerfile_sample

@@ -17,7 +17,7 @@ ENV CGO_ENABLED=0
 RUN vx build -c velox.toml -o /usr/bin/
 
 # PHP image
-FROM --platform=${TARGETPLATFORM:-linux/amd64} php:8.5.3-cli
+FROM --platform=${TARGETPLATFORM:-linux/amd64} php:8.5.6-cli
 
 # copy required files from builder image
 COPY --from=velox /usr/bin/rr /usr/bin/rr