Fix quotations in tests

Author: joshmgross

.github/workflows/integration.yml

@@ -77,7 +77,7 @@ jobs:
         with:
           script: |
             const endpoint = github.request.endpoint
-            return endpoint({url: \"/graphql\"}).headers.accept
+            return endpoint({url: "/graphql"}).headers.accept
           result-encoding: string
       - id: previews-set-single
         name: Previews set to a single value
@@ -86,7 +86,7 @@ jobs:
           previews: foo
           script: |
             const endpoint = github.request.endpoint
-            return endpoint({url: \"/graphql\"}).headers.accept
+            return endpoint({url: "/graphql"}).headers.accept
           result-encoding: string
       - id: previews-set-multiple
         name: Previews set to comma-separated list
@@ -95,7 +95,7 @@ jobs:
           previews: foo,bar,baz
           script: |
             const endpoint = github.request.endpoint
-            return endpoint({url: \"/graphql\"}).headers.accept
+            return endpoint({url: "/graphql"}).headers.accept
           result-encoding: string
       - run: |
           echo "- Validating previews default"