fix(ci): only download specs if not already in checkout

Twilio spec (twilio.json) is tracked in git. The CI was downloading a
fresh copy that has Unicode escape issues. Now only downloads specs
that are gitignored (Stripe, OpenAI) and uses committed files when
available.

Author: zach-snell

.github/workflows/ci.yaml

@@ -92,23 +92,35 @@ jobs:
         env:
           GH_TOKEN: ${{ github.token }}
 
-      - name: Download API specs
+      - name: Download API specs (if not in checkout)
         run: |
           case "${{ matrix.sample.name }}" in
             stripe)
-              curl -sf -L -o third-party-apis/stripe-api/stripe.yaml \
-                "https://raw.githubusercontent.com/stripe/openapi/master/openapi/spec3.yaml"
-              echo "Downloaded Stripe spec ($(wc -c < third-party-apis/stripe-api/stripe.yaml) bytes)"
+              if [ ! -f third-party-apis/stripe-api/stripe.yaml ]; then
+                curl -sf -L -o third-party-apis/stripe-api/stripe.yaml \
+                  "https://raw.githubusercontent.com/stripe/openapi/master/openapi/spec3.yaml"
+                echo "Downloaded Stripe spec"
+              else
+                echo "Stripe spec already in checkout ($(wc -c < third-party-apis/stripe-api/stripe.yaml) bytes)"
+              fi
               ;;
             twilio)
-              curl -sf -L -o third-party-apis/twilio-api/twilio.json \
-                "https://raw.githubusercontent.com/twilio/twilio-oai/main/spec/json/twilio_api_v2010.json"
-              echo "Downloaded Twilio spec ($(wc -c < third-party-apis/twilio-api/twilio.json) bytes)"
+              if [ ! -f third-party-apis/twilio-api/twilio.json ]; then
+                curl -sf -L -o third-party-apis/twilio-api/twilio.json \
+                  "https://raw.githubusercontent.com/twilio/twilio-oai/main/spec/json/twilio_api_v2010.json"
+                echo "Downloaded Twilio spec"
+              else
+                echo "Twilio spec already in checkout ($(wc -c < third-party-apis/twilio-api/twilio.json) bytes)"
+              fi
               ;;
             openai)
-              curl -sL -o third-party-apis/openai-api/openai.yaml \
-                "https://app.stainless.com/api/spec/documented/openai/openapi.documented.yml"
-              echo "Downloaded OpenAI spec ($(wc -c < third-party-apis/openai-api/openai.yaml) bytes)"
+              if [ ! -f third-party-apis/openai-api/openai.yaml ]; then
+                curl -sL -o third-party-apis/openai-api/openai.yaml \
+                  "https://app.stainless.com/api/spec/documented/openai/openapi.documented.yml"
+                echo "Downloaded OpenAI spec"
+              else
+                echo "OpenAI spec already in checkout ($(wc -c < third-party-apis/openai-api/openai.yaml) bytes)"
+              fi
               ;;
           esac