chore: Update charm libraries

lib/charms/lego_base_k8s/v0/lego_client.py

@@ -95,7 +95,7 @@ def _plugin_config(self):
 
 # Increment this PATCH version before using `charmcraft publish-lib` or reset
 # to 0 if you are raising the major API version
-LIBPATCH = 8
+LIBPATCH = 9
 
 
 logger = logging.getLogger(__name__)
@@ -144,7 +144,7 @@ def _on_collect_status(self, event: CollectStatusEvent) -> None:
                 BlockedStatus(err)
             )
             return
-        event.add_status(ActiveStatus())
+        event.add_status(ActiveStatus(self._get_certificate_fulfillment_status()))
 
     def _sync_certificates(self, event: EventBase) -> None:
         """Go through all the certificates relations and handle outstanding requests."""
@@ -278,6 +278,19 @@ def _generate_signed_certificate(self, csr: str, relation_id: int):
             relation_id=relation_id,
         )
 
+    def _get_certificate_fulfillment_status(self) -> str:
+        """Return the status message reflecting how many certificate requests are still pending."""
+        outstanding_requests_num = len(
+            self.tls_certificates.get_outstanding_certificate_requests()
+        )
+        total_requests_num = len(
+            self.tls_certificates.get_requirer_csrs()
+        )
+        fulfilled_certs = total_requests_num - outstanding_requests_num
+        return (
+            f"{fulfilled_certs}/{total_requests_num} certificate requests are fulfilled"
+        )
+
     @property
     def _cmd(self) -> List[str]:
         """Command to run to get the certificate.