Updates actions/cache to v4

> Your workflow is using a version of actions/cache that is scheduled for deprecation, actions/cache@v1. Please update your workflow to use either v3 or v4 of actions/cache to avoid interruptions. Learn more: https://github.blog/changelog/2024-12-05-notice-of-upcoming-releases-and-breaking-changes-for-github-actions/#actions-cache-v1-v2-and-actions-toolkit-cache-package-closing-down

actions/cache#1510:
> We recommend upgrading to version v4 or v3 as soon as possible before March 1st, 2025.

Author: bocytko

.github/workflows/build.yaml

@@ -24,7 +24,7 @@ jobs:
     - name: Checkout
       uses: actions/checkout@v1
     - name: Cache
-      uses: actions/cache@v1
+      uses: actions/cache@v4
       with:
         path: ~/.m2
         key: m2