fix: update workflows to use yarn v4

Author: Ahmed Hamouda

.github/workflows/reusable-setup-cache.yml

@@ -26,9 +26,10 @@ jobs:
         uses: actions/setup-node@60edb5dd545a775178f52524783378180af0d1f8 # v4.0.2 https://github.com/actions/setup-node/commit/60edb5dd545a775178f52524783378180af0d1f8
         with:
           node-version: 20
-          cache: 'yarn'
         env:
           SEGMENT_DOWNLOAD_TIMEOUT_MINS: 2
+      - name: Enable Corepack
+        run: corepack enable
       - name: Restore cypress runner from Cache
         uses: actions/cache@1bd1e32a3bdc45362d1e726936510720a7c30a57 # v4.2.0 https://github.com/actions/cache/commit/1bd1e32a3bdc45362d1e726936510720a7c30a57
         id: restore-cypress-cache

.github/workflows/reusable-unit.yml

@@ -46,10 +46,12 @@ jobs:
         uses: actions/setup-node@60edb5dd545a775178f52524783378180af0d1f8 # v4.0.2 https://github.com/actions/setup-node/commit/60edb5dd545a775178f52524783378180af0d1f8
         with:
           node-version: 20
-          cache: 'yarn'
         env:
           SEGMENT_DOWNLOAD_TIMEOUT_MINS: 2
 
+      - name: Enable Corepack
+        run: corepack enable
+
       - name: Restore node_modules cache
         uses: actions/cache@1bd1e32a3bdc45362d1e726936510720a7c30a57 # v4.2.0 https://github.com/actions/cache/commit/1bd1e32a3bdc45362d1e726936510720a7c30a57
         id: restore-cache