Embed rotated release public key; pin compose example to v0.1.4

compose.yaml.example

@@ -6,7 +6,7 @@
 # ComfyUI --listen 0.0.0.0 --port 8189).
 services:
   gpu-turnstile:
-    image: git.rambossek.at/public/gpu-turnstile:v0.1.3
+    image: git.rambossek.at/public/gpu-turnstile:v0.1.4
     restart: unless-stopped
     environment:
       # Each consumer is enabled by setting its URL; leave one unset to

internal/update/pubkey.go

@@ -11,6 +11,6 @@ package update
 // the RELEASE_SIGNING_KEY repository secret. When empty, the updater refuses
 // to update (e.g. development builds).
 var publicKeyPEM = `-----BEGIN PUBLIC KEY-----
-MCowBQYDK2VwAyEA+gJbSvgeYX58woPQGbSC8x8Zw4OTDiiQ7/19seZKfSQ=
+MCowBQYDK2VwAyEAqTAJ0CCeAQI7MhFlgc5xNmF/CfvLVUAY3ZAoeAS0tT8=
 -----END PUBLIC KEY-----
 `