ci: add symlink-dirlink-basis to Cygwin's expected-skipped list

The test correctly skips on Cygwin (which lacks RESOLVE_BENEATH), but
the workflow's RSYNC_EXPECT_SKIPPED list still treats any change in
the skipped set as a CI failure. Add the new test name so the
skipped/got comparison matches.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

Author: tridge

.github/workflows/cygwin-build.yml

@@ -39,7 +39,7 @@ jobs:
     - name: info
       run: bash -c '/usr/local/bin/rsync --version'
     - name: check
-      run: bash -c 'RSYNC_EXPECT_SKIPPED=acls-default,acls,chown,devices,dir-sgid,open-noatime,protected-regular,simd-checksum make check'
+      run: bash -c 'RSYNC_EXPECT_SKIPPED=acls-default,acls,chown,devices,dir-sgid,open-noatime,protected-regular,simd-checksum,symlink-dirlink-basis make check'
     - name: ssl file list
       run: bash -c 'PATH="/usr/local/bin:$PATH" rsync-ssl --no-motd download.samba.org::rsyncftp/ || true'
     - name: save artifact