Revert "less concurrency"

Author: kkraune

.github/workflows/jekyll-link-checker.yml

@@ -139,6 +139,6 @@ jobs:
             --no-check-external-hash \
             --no-enforce-https \
             --swap-urls "${SWAP_URLS}" \
-            --typhoeus '{"connecttimeout": 10, "timeout": 30, "accept_encoding": "zstd,br,gzip,deflate", "max_concurrency": 1}' \
+            --typhoeus '{"connecttimeout": 10, "timeout": 30, "accept_encoding": "zstd,br,gzip,deflate"}' \
             ${{ inputs.additional-args }} \
             _site