chore(deps, cpp): update ms-vscode.cpptools (#519)

Update ms-vscode.cpptools

Co-authored-by: rjaegers <45816308+rjaegers@users.noreply.github.com>

Author: philips-software-forest-releaser[bot]

.devcontainer/cpp/devcontainer-metadata-vscode.json

@@ -10,7 +10,7 @@
         "matepek.vscode-catch2-test-adapter@4.12.0",
         "mhutchie.git-graph@1.30.0",
         "ms-vscode.cmake-tools@1.18.43",
-        "ms-vscode.cpptools@1.21.3",
+        "ms-vscode.cpptools@1.21.4",
         "ms-vsliveshare.vsliveshare@1.0.5936",
         "sonarsource.sonarlint-vscode@4.7.0",
         "xaver.clang-format@1.9.0"