flake.lock: bump clan-core to a566329

Fixes devShell build on nixpkgs 5adc508: makeWrapper no longer word-splits
makeWrapperArgs, so clan-cli's "--unset LD_LIBRARY_PATH" single-string
args failed with "makeWrapper doesn't understand the arg". Upstream
clan-core main splits the tokens.

flake.lock

@@ -151,11 +151,11 @@
         ]
       },
       "locked": {
-        "lastModified": 1792422590,
-        "narHash": "sha256-PQjBfmQPYZoOJZ76Fzgrg070tT2zEI01N45STYirDe4=",
+        "lastModified": 1792664877,
+        "narHash": "sha256-yl7J8TPJ9GCG0T5KreuquOpyP2yzBHHaK/IlkO8x8z0=",
         "ref": "refs/heads/main",
-        "rev": "86d72f39b3765b5261cb576c8aa2ec20e77d7599",
-        "revCount": 15395,
+        "rev": "a566329bbcf0f915c4e6f42c2aee0354e1cd2c12",
+        "revCount": 15401,
         "type": "git",
         "url": "https://git.clan.lol/clan/clan-core"
       },