Update Cppcheck to v2.6.0 // Resolve #3942

platformio/__init__.py

@@ -51,7 +51,7 @@ __core_packages__ = {
     "contrib-pysite": "~2.%d%d.0" % (sys.version_info.major, sys.version_info.minor),
     "tool-unity": "~1.20500.0",
     "tool-scons": "~4.40200.0",
-    "tool-cppcheck": "~1.250.0",
+    "tool-cppcheck": "~1.260.0",
     "tool-clangtidy": "~1.120001.0",
     "tool-pvs-studio": "~7.14.0",
 }