Do not double-prefix cache

pkg/config/admin_server_config.go

@@ -33,7 +33,7 @@ var _ IssueAPIConfig = (*AdminAPIServerConfig)(nil)
 type AdminAPIServerConfig struct {
 	Database      database.Config
 	Observability observability.Config
-	Cache         cache.Config `env:",prefix=CACHE_"`
+	Cache         cache.Config
 
 	// DevMode produces additional debugging information. Do not enable in
 	// production environments.

pkg/config/api_server_config.go

@@ -33,7 +33,7 @@ import (
 type APIServerConfig struct {
 	Database      database.Config
 	Observability observability.Config
-	Cache         cache.Config `env:",prefix=CACHE_"`
+	Cache         cache.Config
 
 	// DevMode produces additional debugging information. Do not enable in
 	// production environments.

pkg/config/server_config.go

@@ -36,7 +36,7 @@ type ServerConfig struct {
 	Firebase      FirebaseConfig
 	Database      database.Config
 	Observability observability.Config
-	Cache         cache.Config `env:",prefix=CACHE_"`
+	Cache         cache.Config
 
 	Port string `env:"PORT,default=8080"`