feature: increase mandatory coverage to 95%

Signed-off-by: Leonidas Spyropoulos <artafinde@archlinux.org>

.coveragerc

@@ -3,7 +3,7 @@ disable_warnings = already-imported
 
 [report]
 include = aurweb/*
-fail_under = 85
+fail_under = 95
 exclude_lines =
     if __name__ == .__main__.:
     pragma: no cover