fix: use STARTTLS on port 587 for SMTP instead of SSL 465

asciinema/compose.yaml

@@ -15,10 +15,10 @@ services:
       URL_SCHEME: https
       DATABASE_URL: postgresql://${DB_USER}:${DB_PASSWORD}@${CORE_DB_HOST}/${ASCIINEMA_DB_NAME}?pool_size=10
       SMTP_HOST: ${EMAIL_SMTP_HOST}
-      SMTP_PORT: ${EMAIL_SMTP_PORT}
+      SMTP_PORT: 587
       SMTP_USERNAME: ${EMAIL_SMTP_USER}
       SMTP_PASSWORD: ${EMAIL_SMTP_PASSWORD}
-      SMTP_SSL: true
+      SMTP_TLS: always
       MAIL_FROM_ADDRESS: ${EMAIL_FROM}
       SIGN_UP_DISABLED: ${ASCIINEMA_SIGN_UP_DISABLED:-false}
       DEFAULT_AVATAR: gravatar