Apply suggestions from code review

Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>

Author: oscarsj

csharp/ql/integration-tests/posix/standalone_dependencies_no_framework/test.py

@@ -3,7 +3,7 @@
 import os
 
 
-# Skipping the test on the ARM runners, macos-15 and macos-26, as we're running 
+# Skipping the test on the ARM runners, macos-15 and macos-26, as we're running
 # into trouble with Mono and nuget.
 @pytest.mark.only_if(
     runs_on.linux

csharp/ql/integration-tests/posix/standalone_dependencies_nuget/test.py

@@ -6,8 +6,14 @@
 # into trouble with Mono and nuget.
 @pytest.mark.only_if(
     runs_on.linux
-    or (runs_on.macos and runs_on.x86_64
-        and not runs_on.macos_15 and not runs_on.macos_26)
+    or (
+        runs_on.macos
+        and runs_on.x86_64
+        and not (
+            runs_on.macos_15
+            or runs_on.macos_26
+        )
+    )
 )
 def test(codeql, csharp):
     codeql.database.create(build_mode="none")