fix: use url-safe b64 encoding in deep links

Signed-off-by: Ariel Gentile <[email protected]>

oidc-controller/api/routers/oidc.py

@@ -164,10 +164,10 @@ async def get_authorize(request: Request, db: Database = Depends(get_db)):
     # BC Wallet deep link
     if settings.USE_URL_DEEP_LINK:
         suffix = (
-            f'_url={base64.b64encode(url_to_message.encode("utf-8")).decode("utf-8")}'
+            f'_url={base64.urlsafe_b64encode(url_to_message.encode("utf-8")).decode("utf-8")}'
         )
     else:
-        suffix = f'c_i={base64.b64encode(formated_msg.encode("utf-8")).decode("utf-8")}'
+        suffix = f'c_i={base64.urlsafe_b64encode(formated_msg.encode("utf-8")).decode("utf-8")}'
     WALLET_DEEP_LINK_PREFIX = settings.WALLET_DEEP_LINK_PREFIX
     wallet_deep_link = f"{WALLET_DEEP_LINK_PREFIX}?{suffix}"