Bump alpine from 3.17 to 3.18 in /core (#618)

Bumps alpine from 3.17 to 3.18.

---
updated-dependencies:
- dependency-name: alpine
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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core/Dockerfile

@@ -1,6 +1,6 @@
 # syntax = docker/dockerfile:1.3
 # Use 3.15 for Core since it has Python 3.9
-FROM alpine:3.17
+FROM alpine:3.18
 
 #Add startup script to container
 COPY docker-entrypoint.sh /usr/local/bin/

core/Dockerfile.dev

@@ -1,6 +1,6 @@
 # syntax = docker/dockerfile:1.3
 # Use 3.15 for Core since it has Python 3.9
-FROM alpine:3.17
+FROM alpine:3.18
 
 #Add startup script to container
 COPY docker-entrypoint.sh /usr/local/bin/