Revert "Use temporary GHA to clear more diskspace for IDE platform ve…

…rification workflow."

This reverts commit a52886de94228e8250b852ba1c8075a35a4681bd.

Reverting because jlumbroso/free-disk-space#8 is now resolved and released (v1.3.0).

.github/workflows/compatibility.yml

@@ -43,9 +43,7 @@ jobs:
       # https://github.com/actions/runner-images/issues/2840#issuecomment-790492173
       # https://github.com/jlumbroso/free-disk-space
       - name: Free Disk Space (Ubuntu)
-        # TODO: revert to jlumbroso/free-disk-space once jlumbroso/free-disk-space#8 is merged and released.
-#        uses: jlumbroso/free-disk-space@76866dbe54312617f00798d1762df7f43def6e5c # v1.2.0
-        uses: kfir4444/free-disk-space@0f2cc361875b00eaca290d19f2176e58c664fb02 # latest as of 2023-08-19
+        uses: jlumbroso/free-disk-space@76866dbe54312617f00798d1762df7f43def6e5c # v1.2.0
         with:
           # this remove tools (actions/setup-java) that are needed; hence, disable.
           tool-cache: false