Replace forked cache by official npm (#21)

* Replace forked cache by official npm

* Follow the same validation as @action/cache

* Remove debug log

Author: sayboras

.github/workflows/test.yml

@@ -10,15 +10,15 @@ jobs:
   build: # make sure build/ci work properly
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@v1
+    - uses: actions/checkout@v2
     - run: |
         npm install
         npm run prepare-deps
         npm run all
   test: # make sure the action works on a clean machine without building
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@v1
+    - uses: actions/checkout@v2
     - uses: ./
       with:
         version: v1.26

README.md

@@ -58,7 +58,7 @@ The restrictions of annotations are the following:
 
 The action was implemented with performance in mind:
 
-1. We cache data by [@actions/cache](https://github.com/actions/cache) between builds: Go build cache, Go modules cache, golangci-lint analysis cache.
+1. We cache data by [@actions/cache](https://github.com/actions/toolkit/tree/master/packages/cache) between builds: Go build cache, Go modules cache, golangci-lint analysis cache.
 2. We don't use Docker because image pulling is slow.
 3. We do as much as we can in parallel, e.g. we download cache, go and golangci-lint binary in parallel.
 
@@ -74,7 +74,7 @@ For example, in a repository of [golangci-lint](https://github.com/golangci/gola
 We use JavaScript-based action. We don't use Docker-based action because:
 
 1. docker pulling is slow currently
-2. it's easier to use caching from [@actions/cache](https://github.com/actions/cache) until GitHub team hasn't supported reusing actions from actions
+2. it's easier to use caching from [@actions/cache](https://github.com/actions/toolkit/tree/master/packages/cache)
 
 Inside our action we perform 3 steps: