Update code coverage percentage to 98

Author: holtskinner

.coveragerc

@@ -22,7 +22,7 @@ omit =
   google/cloud/__init__.py
 
 [report]
-fail_under = 99
+fail_under = 98
 show_missing = True
 exclude_lines =
     # Re-enable the standard pragma

owlbot.py

@@ -30,7 +30,7 @@
     unit_test_python_versions=["3.8", "3.9", "3.10", "3.11", "3.12", "3.13", "3.14"],
     system_test_python_versions=["3.9", "3.14"],
     default_python_version="3.13",
-    cov_level=99,
+    cov_level=98,
     intersphinx_dependencies={
         "pandas": "https://pandas.pydata.org/pandas-docs/stable/"
     },