Update link checking (#294)

* Update link checking

* Update to 0.20.1

Author: trask

.github/config/lychee.toml

@@ -0,0 +1,19 @@
+# Lychee configuration file
+# See https://lychee.cli.rs/config/
+
+timeout = 30
+retry_wait_time = 5
+max_retries = 6
+max_concurrency = 4
+
+# Check link anchors
+include_fragments = true
+
+remap = [
+  # workaround for https://github.com/lycheeverse/lychee/issues/1729
+  "https://github.com/(.*?)/(.*?)/blob/(.*?)/(.*#.*)$ https://raw.githubusercontent.com/$1/$2/$3/$4",
+]
+
+exclude = [
+  '^https://github.com/.*#discussion_r.*$',
+]

.github/workflows/build.yml

@@ -94,10 +94,10 @@ jobs:
             exit 1
           fi
 
-  markdown-link-check:
+  link-check:
     # release branches are excluded to avoid unnecessary maintenance
     if: ${{ !startsWith(github.ref_name, 'release/') }}
-    uses: ./.github/workflows/reusable-markdown-link-check.yml
+    uses: ./.github/workflows/reusable-link-check.yml
 
   misspell-check:
     # release branches are excluded to avoid unnecessary maintenance

.github/workflows/reusable-link-check.yml

@@ -0,0 +1,19 @@
+name: Reusable - Link check
+
+on:
+  workflow_call:
+
+permissions:
+  contents: read
+
+jobs:
+  link-check:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
+
+      - name: Setup mise
+        uses: jdx/mise-action@5ac50f778e26fac95da98d50503682459e86d566 # v3.2.0
+
+      - name: Run link check
+        run: mise run link-check

.github/workflows/reusable-markdown-link-check.yml

@@ -0,0 +1,9 @@
+[tools]
+lychee = "0.20.1"
+
+[tasks.link-check]
+run = 'lychee --verbose --config .github/config/lychee.toml .'
+
+[settings]
+# Only install tools explicitly defined in the [tools] section above
+idiomatic_version_file_enable_tools = []