feat: add stripe webhooks (#4)

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Reviewed-on: #4
Co-authored-by: Naomi Carrigan <commits@nhcarrigan.com>
Co-committed-by: Naomi Carrigan <commits@nhcarrigan.com>

prod.env

@@ -2,4 +2,6 @@ MATRIX_ACCESS_TOKEN="op://Environment Variables - Naomi/Alert Server/matrix_acce
 MATRIX_ROOM_ID="op://Environment Variables - Naomi/Alert Server/matrix_room_id"
 API_AUTH="op://Environment Variables - Naomi/Alert Server/api_auth"
 EMAIL_PASSWORD="op://Environment Variables - Naomi/Alert Server/email_pass"
-DISCORD_WEBHOOK_URL="op://Environment Variables - Naomi/Alert Server/discord_hook"
+DISCORD_WEBHOOK_URL="op://Environment Variables - Naomi/Alert Server/discord_hook"
+STRIPE_SECRET_KEY="op://Environment Variables - Naomi/Alert Server/stripe"
+STRIPE_WEBHOOK_SECRET="op://Environment Variables - Naomi/Alert Server/stripe_webhook"