ci: move .lycheeignore to website/ (#8589)

The lychee action now has a `workingDirectory` argument that makes it
search for a `.lycheeignore` file in that directory. We can use this to
remove the `.lycheeignore` file from our top-level repository tree,
uncluttering that a bit.

.github/workflows/website-links.yml

@@ -16,15 +16,16 @@ jobs:
 
       - name: Check links on website
         id: lychee
-        uses: lycheeverse/lychee-action@f613c4a64e50d792e0b31ec34bbcbba12263c6a6 # v2.3.0
+        uses: lycheeverse/lychee-action@1d97d84f0bc547f7b25f4c2170d87d810dc2fb2c # v2.4.0
         with:
           fail: false
-          args: --verbose --no-progress --exclude-all-private --base https://firezone.dev website/
+          args: --verbose --no-progress --exclude-all-private --base https://firezone.dev .
+          workingDirectory: website
 
       - name: Create Issue From File
         if: steps.lychee.outputs.exit_code != 0
         uses: peter-evans/create-issue-from-file@e8ef132d6df98ed982188e460ebb3b5d4ef3a9cd # v5.0.1
         with:
           title: Link Checker Report
-          content-filepath: ./lychee/out.md
+          content-filepath: ./website/lychee/out.md
           labels: report, automated issue