[MISC] Bump libs and remove TestCase (#622)

* Bump libs

* Remove test case asserts

* Excessive assert

Author: dragomirp

lib/charms/tempo_k8s/v2/tracing.py

@@ -97,7 +97,7 @@ def __init__(self, *args):
 )
 from ops.framework import EventSource, Object
 from ops.model import ModelError, Relation
-from pydantic import BaseModel, ConfigDict, Field
+from pydantic import BaseModel, Field
 
 # The unique Charmhub library identifier, never change it
 LIBID = "12977e9aa0b34367903d8afeb8c3d85d"
@@ -107,7 +107,7 @@ def __init__(self, *args):
 
 # Increment this PATCH version before using `charmcraft publish-lib` or reset
 # to 0 if you are raising the major API version
-LIBPATCH = 8
+LIBPATCH = 10
 
 PYDEPS = ["pydantic"]
 
@@ -338,7 +338,7 @@ class Config:
     class ProtocolType(BaseModel):
         """Protocol Type."""
 
-        model_config = ConfigDict(
+        model_config = ConfigDict(  # type: ignore
             # Allow serializing enum values.
             use_enum_values=True
         )
@@ -902,7 +902,16 @@ def _get_endpoint(
     def get_endpoint(
         self, protocol: ReceiverProtocol, relation: Optional[Relation] = None
     ) -> Optional[str]:
-        """Receiver endpoint for the given protocol."""
+        """Receiver endpoint for the given protocol.
+
+        It could happen that this function gets called before the provider publishes the endpoints.
+        In such a scenario, if a non-leader unit calls this function, a permission denied exception will be raised due to
+        restricted access. To prevent this, this function needs to be guarded by the `is_ready` check.
+
+        Raises:
+        ProtocolNotRequestedError:
+            If the charm unit is the leader unit and attempts to obtain an endpoint for a protocol it did not request.
+        """
         endpoint = self._get_endpoint(relation or self._relation, protocol=protocol)
         if not endpoint:
             requested_protocols = set()
@@ -925,7 +934,7 @@ def get_endpoint(
 def charm_tracing_config(
     endpoint_requirer: TracingEndpointRequirer, cert_path: Optional[Union[Path, str]]
 ) -> Tuple[Optional[str], Optional[str]]:
-    """Utility function to determine the charm_tracing config you will likely want.
+    """Return the charm_tracing config you likely want.
 
     If no endpoint is provided:
      disable charm tracing.