consume v0.15 of @lukka scoped packages

.gitmodules

@@ -1,3 +0,0 @@
-[submodule "libs"]
-	path = libs
-	url = https://github.com/lukka/run-cmake-vcpkg-action-libs.git

CONTRIBUTING.md

@@ -10,6 +10,16 @@ The software is provided as is, there is no warranty of any kind. All users are
 ## Prerequisites
 [gulp 4](https://www.npmjs.com/package/gulp4) globally installed.
 
+### Setup for GitHub Registry public packages
+
+`run-cmake` depends on public NPM packages published by [lukka/run-cmake-vcpkg-action-libs](https://github.com/lukka/run-cmake-vcpkg-action-libs) in the [GitHub Packages registry](https://docs.github.com/en/free-pro-team@latest/packages/using-github-packages-with-your-projects-ecosystem/configuring-npm-for-use-with-github-packages).
+Unexpectedly, a public package still requires authentication when downloading it, hence if you want to `npm install` those packages correctly, you need to obtain a token with `read:packages` scope. Then create in the root of the repository a `.npmrc` file with the following content:
+
+   //npm.pkg.github.com/:_authToken=YOURTOKEN
+   @lukka:registry=https://npm.pkg.github.com/
+
+__Note__: **Never commit this `.npmrc` file!**
+
 ## Build and lint
 Build with `tsc` running:
 

package.json

@@ -42,10 +42,10 @@
     "@actions/exec": "^1.0.1",
     "@actions/github": "^1.1.0",
     "@actions/io": "^1.0.1",
-    "@lukka/base-lib": "0.14.1",
-    "@lukka/base-util-lib": "0.14.1",
-    "@lukka/action-lib": "0.14.1",
-    "@lukka/run-vcpkg-lib": "0.14.1",
+    "@lukka/base-lib": "^0.15.1",
+    "@lukka/base-util-lib": "^0.15.1",
+    "@lukka/action-lib": "^0.15.1",
+    "@lukka/run-vcpkg-lib": "^0.15.1",
     "@types/adm-zip": "^0.4.32",
     "@types/follow-redirects": "^1.8.0",
     "@types/jest": "^24.9.0",