chore: fix reusable deployment job

Author: soumyamahunt

.github/workflows/cd.yml

@@ -15,7 +15,7 @@ jobs:
     - name: Setup Ruby
       uses: ruby/setup-ruby@v1
       with:
-        ruby-version: ${{ env.RUBY_VER }}
+        ruby-version: 2.7
 
     - name: Setup repository
       uses: ./.github/actions/setup

.github/workflows/main.yml

@@ -16,9 +16,6 @@ on:
         required: false
         type: string
 
-env:
-  RUBY_VER: 2.7
-
 concurrency:
   group: ci/cd-${{ github.ref }}
   cancel-in-progress: true