fix: install gcovr via apt on Ubuntu by default

Author: aminya

dist/legacy/setup-cpp.js

@@ -1,11 +1,16 @@
 import { addEnv } from "envosman"
 import semverMajor from "semver/functions/major"
 import semverValid from "semver/functions/valid"
+import { hasApt, installAptPack } from "setup-apt"
 import { rcOptions } from "../options.js"
 import { setupPipPack } from "../utils/setup/setupPipPack.js"
 
 // eslint-disable-next-line @typescript-eslint/no-unused-vars
 export function setupGcovr(version: string | undefined, _setupDir: string, _arch: string) {
+  if (hasApt() && (version === undefined || version === "")) {
+    // use apt on Ubuntu/Debian if version is not specified
+    return installAptPack([{ name: "gcovr", version }])
+  }
   return setupPipPack("gcovr", version)
 }