chore(deps): update caddy:2.10.2-alpine docker digest to 4c6e91c

Author: renovate[bot]

compose.yml

@@ -2,7 +2,7 @@
 # yaml-language-server: $schema=https://raw.githubusercontent.com/compose-spec/compose-spec/main/schema/compose-spec.json
 services:
   caddy:
-    image: caddy:2.10.2-alpine@sha256:953131cfea8e12bfe1c631a36308e9660e4389f0c3dfb3be957044d3ac92d446
+    image: caddy:2.10.2-alpine@sha256:4c6e91c6ed0e2fa03efd5b44747b625fec79bc9cd06ac5235a779726618e530d
     restart: always
     ports:
       - "80:80"