Fix link checking

- update action to currently maintained version
- consider 429 (rate limiting) and 403 (forbidden) as success
since sites like developer.arm.com sometimes block the action.

Author: rockdreamer

.github/workflows/ci.yml

@@ -42,8 +42,8 @@ jobs:
   markdown-link-check:
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@v4.1.7
-    - uses: gaurav-nelson/github-action-markdown-link-check@v1
+    - uses: actions/checkout@v6.0.2
+    - uses: tcort/github-action-markdown-link-check@v1
       with:
           config-file: '.github/workflows/markdown-link-check.json'
 

.github/workflows/markdown-link-check.json

@@ -3,5 +3,6 @@
         {
             "pattern": "^https://developer.arm.com/architectures/instruction-sets/intrinsics/"
         }
-    ]
+    ],
+	"aliveStatusCodes": [200, 206, 403, 429]
 }