fix: add optional environment secrets to reusable workflow for secure access

Author: abbesBenayache

.github/workflows/reusable-dapp-deploy.yml

@@ -55,13 +55,13 @@ on:
 
       WEB3MAIL_DAPP_OWNER_PRIVATEKEY:
         description: 'Private key for dapp owner wallet'
-        required: true
+        required: false
       RPC_URL:
         description: 'RPC URL for blockchain connection'
-        required: true
+        required: false
       WEB3MAIL_WHITELIST_CONTRACT_ADDRESS:
         description: 'Whitelist contract address'
-        required: true
+        required: false
 
 jobs:
   docker-publish: