pyopenssl_context.py: Fix incorrect service_identity error names

When there is a mistake in the certificates configuration, PyMongo would give the following error:
```
pymongo.errors.ServerSelectionTimeoutError: module service_identity has no attribute SICertificateError, Timeout: 30s, Topology Description: <…>
```
Because the `except` block expected non-existing errors, the error gets transformed to "module … has no attribute …".
The errors in the `service_identity` have never had the `SI` prefix:
https://github.com/pyca/service-identity/blob/18.1.0/src/service_identity/exceptions.py
It looks like the errors were imported with an alias before, but this aliasing was (only partially) removed when rewriting to lazy imports in this commit:
42a08c4#diff-b277a2f4cfbb5decab333d0b90a08a4ad64b91fb1691ed8412b15949d1aaceee
The lazy imports were removed again in this commit, but the error remained:
49987e6#diff-b277a2f4cfbb5decab333d0b90a08a4ad64b91fb1691ed8412b15949d1aaceee
Most likely, the `# type: ignore[misc]` comment can now also be removed.

Author: mpsijm

pymongo/pyopenssl_context.py

@@ -420,9 +420,9 @@ def wrap_socket(
                         pyopenssl.verify_ip_address(ssl_conn, server_hostname)
                     else:
                         pyopenssl.verify_hostname(ssl_conn, server_hostname)
-                except (  # type:ignore[misc]
-                    service_identity.SICertificateError,
-                    service_identity.SIVerificationError,
+                except (
+                    service_identity.CertificateError,
+                    service_identity.VerificationError,
                 ) as exc:
                     raise _CertificateError(str(exc)) from None
         return ssl_conn