Update action cache from @v2 to @v4 in Github Action workflows

<!-- Bellow section will be used to automatically generate changelog, please do not modify HTML code structure -->
<h2>Change Log</h2>
<div id="change-log">
  <h4>Added</h4>
  <ul id="added">
    <!-- <li>Feature making everything better</li> -->
  </ul> 
  <h4>Fixed</h4>  
  <ul id="fixed">
    <!-- <li>Behavior that was incorrect</li> -->
  </ul>
  <h4>Changed</h4>
  <ul id="changed">
    <li>Update action cache from @v2 to @v4 in Github Action workflows</li>
  </ul>  
  <h4>Removed</h4>
  <ul id="removed">
    <!-- <li>Something</li> -->
  </ul>
  <h4>Deprecated</h4>
  <ul id="deprecated">
    <!-- <li>Something is from now deprecated</li> -->
  </ul>  
  <h4>Security</h4> 
  <ul id="security">
    <!-- <li>Something that was a security issue, is not an issue anymore</li> -->
  </ul>     
</div>
<hr/>

<h2>Description</h2>

<!-- Please provide a short description of changes in this section, feel free to use markdown syntax -->

---

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Author: norberttech

.github/workflows/changelog-update.yml

@@ -20,7 +20,7 @@ jobs:
         uses: "actions/checkout@v2"
 
       - name: "Restore Automation cache"
-        uses: "actions/cache@v2"
+        uses: "actions/cache@v4"
         with:
           path: |
             cache

.github/workflows/static-analyze.yml

@@ -41,7 +41,7 @@ jobs:
           echo "::set-output name=dir::$(composer config cache-files-dir)"
 
       - name: "Cache Composer dependencies"
-        uses: "actions/cache@v2"
+        uses: "actions/cache@v4"
         with:
           path: |
             ${{ steps.composer-cache.outputs.dir }}

.github/workflows/tests.yml

@@ -45,7 +45,7 @@ jobs:
           echo "::set-output name=dir::$(composer config cache-files-dir)"
 
       - name: "Cache Composer dependencies"
-        uses: "actions/cache@v2"
+        uses: "actions/cache@v4"
         with:
           path: |
             ${{ steps.composer-cache.outputs.dir }}