HYPERFLEET-1024 - fix: pin spectral cli

Author: mliptak0

.github/workflows/ci.yml

@@ -24,9 +24,6 @@ jobs:
       - name: Install dependencies
         run: npm ci
 
-      - name: Install Spectral CLI
-        run: npm install -g @stoplight/spectral-cli@6.15.1
-
       - name: Build all schemas
         run: |
           ./build-schema.sh core
@@ -44,7 +41,7 @@ jobs:
 
       - name: Lint OpenAPI schemas
         run: |
-          spectral lint schemas/core/openapi.yaml schemas/gcp/openapi.yaml --format github-actions
+          node_modules/.bin/spectral lint schemas/core/openapi.yaml schemas/gcp/openapi.yaml --format github-actions
 
       - name: Check version bump
         env: