chore: replace npm install with npm ci in our workflows (carbon-design-system#1017)

Author: annawen1

.github/workflows/ci.yml

@@ -22,7 +22,7 @@ jobs:
           node-version-file: '.nvmrc'
           cache: "npm"
       - name: Install dependencies
-        run: npm install
+        run: npm ci --prefer-offline
       - name: Run build
         run: npm run build
 
@@ -37,7 +37,7 @@ jobs:
           cache: "npm"
       - name: Install dependencies
         run: |
-          npm install
+          npm ci --prefer-offline
           npx playwright install --with-deps
       - name: Build ai-chat
         run: npm run aiChat:build
@@ -56,7 +56,7 @@ jobs:
           node-version-file: '.nvmrc'
           cache: "npm"
       - name: Install dependencies
-        run: npm install
+        run: npm ci --prefer-offline
       - name: Check formatting of project files (staged)
         if: ${{ github.event_name == 'pull_request' }}
         run: npm run format:staged
@@ -74,7 +74,7 @@ jobs:
           node-version-file: '.nvmrc'
           cache: "npm"
       - name: Install dependencies
-        run: npm install
+        run: npm ci --prefer-offline
       - name: Lint
         run: npm run lint && npm run lint:styles
 
@@ -88,6 +88,6 @@ jobs:
           node-version-file: '.nvmrc'
           cache: "npm"
       - name: Install dependencies
-        run: npm install
+        run: npm ci --prefer-offline
       - name: License check
         run: npm run lint:license

.github/workflows/create-release-tag-and-pr.yml

@@ -109,7 +109,7 @@ jobs:
           registry-url: https://registry.npmjs.org
           cache: "npm"
       - name: Install dependencies
-        run: npm install
+        run: npm ci --prefer-offline
 
       # Generate the changelog with the local 'get-changelog.js' script and output to 'changelog.txt' file
       - name: Run changelog script

.github/workflows/deploy-dev-env.yml

@@ -23,7 +23,7 @@ jobs:
           cache: "npm"
       - name: Install dependencies and build chat packages
         run: |
-          npm install
+          npm ci --prefer-offline
           npm run aiChat:build
 
       # Deploy demo to Github Pages using `gh-pages` package

.github/workflows/publish-chat-cdn.yml

@@ -30,7 +30,7 @@ jobs:
           cache: "npm"
       - name: Install dependencies
         run: |
-          npm install
+          npm ci --prefer-offline
           npm run build
       - name: Check release type
         if: contains(github.event.client_payload.tag, '-rc.') || contains(github.event.inputs.tag, '-rc.')

.github/workflows/publish-components-cdn.yml

@@ -30,7 +30,7 @@ jobs:
           cache: "npm"
       - name: Install dependencies
         run: |
-          npm install
+          npm ci --prefer-offline
           npm run build
       - name: Build Storybook
         run: |

.github/workflows/release-base.yml

@@ -57,7 +57,7 @@ jobs:
           cache: "npm"
       - name: Install dependencies and build
         run: |
-          npm install
+          npm ci --prefer-offline
           npx playwright install --with-deps
           npm run build
       - name: Continuous integration check