skip steps if no version bump in publish workflow (#925)

.github/workflows/publish.yml

@@ -78,19 +78,26 @@ jobs:
 
             # setup node
             - uses: actions/setup-node@v3
+              if: steps.check_version.outputs.bump == 'true'
               with:
                   node-version-file: '.nvmrc'
             - name: Install npm
+              if: steps.check_version.outputs.bump == 'true'
               run: npm i -g npm@$(cat package.json | jq -r .engines.npm)
 
             # get the latest build from the cache produced in the post_pr workflow
 
             - run: mkdir -p protocol/cargo-cache
+              if: steps.check_version.outputs.bump == 'true'
             - run: mkdir -p protocol/target
+              if: steps.check_version.outputs.bump == 'true'
             - run: mkdir -p node_modules
+              if: steps.check_version.outputs.bump == 'true'
             - run: mkdir -p ~/.cache/Cypress
+              if: steps.check_version.outputs.bump == 'true'
 
             - name: Restore cache
+              if: steps.check_version.outputs.bump == 'true'
               uses: actions/cache/restore@v3
               with:
                   path: |
@@ -106,9 +113,13 @@ jobs:
                       project-cache-${{ runner.os }}-${{ runner.arch }}-
 
             - run: ls -la ~/.cache/Cypress || true
+              if: steps.check_version.outputs.bump == 'true'
             - run: ls -la protocol/cargo-cache || true
+              if: steps.check_version.outputs.bump == 'true'
             - run: ls -la protocol/target/ink || true
+              if: steps.check_version.outputs.bump == 'true'
             - run: ls -la node_modules || true
+              if: steps.check_version.outputs.bump == 'true'
 
             - name: Install
               if: steps.check_version.outputs.bump == 'true'