Temporarily consider 429s as success in links check (#6210)

This considers 429s as a success, until we can get lychee to cache
success requests even if there's a failure.
This should only be a temporary measure. But ignoring one status code
seems better than entirely disabling the check.

Related: #6183.

.github/workflows/links-fail-fast.yml

@@ -25,4 +25,5 @@ jobs:
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
         with:
           fail: true
-          args: --max-concurrency 5 --cache --max-cache-age 1d .
+          # TODO: Remove 429s exception once https://github.com/open-telemetry/opentelemetry-go-contrib/issues/6183 is resolved
+          args: --max-concurrency 5 --cache --max-cache-age 1d --accept 100..=103,200..=299,429 .

.github/workflows/links.yml

@@ -30,7 +30,8 @@ jobs:
       env:
         GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
       with:
-          args: --max-concurrency 1 --cache --max-cache-age 1d .
+          # TODO: Remove 429s exception once https://github.com/open-telemetry/opentelemetry-go-contrib/issues/6183 is resolved
+          args: --max-concurrency 1 --cache --max-cache-age 1d --accept 100..=103,200..=299,429 .
 
     - name: Create Issue From File
       if: steps.lychee.outputs.exit_code != 0