Update linter to redocly (#64)

Author: jimmygchen

.github/workflows/main.yml

@@ -11,11 +11,10 @@ jobs:
       with:
         submodules: true
     - uses: actions/setup-node@v2
-    - run: npm i -g @apidevtools/swagger-cli@4 @stoplight/[email protected]
-    - run: spectral --version
+    - run: npm i -g @apidevtools/swagger-cli@4 @redocly/[email protected]
 
     - name: Lint spec
-      run: spectral lint ./builder-oapi.yaml
+      run: redocly lint ./builder-oapi.yaml
 
     - name: Bundle spec
       run: "swagger-cli bundle ./builder-oapi.yaml -r -t yaml -o ./deploy/builder-oapi.yaml"

.redocly.yml

@@ -0,0 +1,7 @@
+extends:
+  - recommended
+rules:
+  no-unused-components: error
+  operation-4xx-response: off
+  operation-tag-defined: error
+  security-defined: off

.spectral.yml

@@ -48,11 +48,11 @@ The API specification is checked for lint errors before merging pull requests.
 
 To run the linter locally, install it with:
 ```console
-npm install -g @stoplight/spectral-cli@6.2.1
+npm install -g @redocly/cli
 ```
 and then run it:
 ```console
-spectral lint builder-oapi.yaml
+redocly lint builder-oapi.yaml
 ```
 
 ### Render API Specification