Update clang-format to version 18

clang-format-18 is available in ubuntu noble(24.04), if you are on
a version lower than that you can use the update script from llvm.
https://apt.llvm.org/

Windows users should be able to download and use clang-format from
their release builds https://github.com/llvm/llvm-project/releases
or get the latest from msys2
https://packages.msys2.org/package/mingw-w64-x86_64-clang.

macOS users can resort to "brew install clang-format".

closes https://github.com/official-stockfish/Stockfish/pull/5365

No functional change

.github/workflows/clang-format.yml

@@ -25,7 +25,7 @@ jobs:
         id: clang-format
         continue-on-error: true
         with:
-          clang-format-version: "17"
+          clang-format-version: "18"
           exclude-regex: "incbin"
 
       - name: Comment on PR
@@ -33,9 +33,9 @@ jobs:
         uses: thollander/actions-comment-pull-request@fabd468d3a1a0b97feee5f6b9e499eab0dd903f6 # @v2.5.0
         with:
           message: |
-            clang-format 17 needs to be run on this PR.
+            clang-format 18 needs to be run on this PR.
             If you do not have clang-format installed, the maintainer will run it when merging.
-            For the exact version please see https://packages.ubuntu.com/mantic/clang-format-17.
+            For the exact version please see https://packages.ubuntu.com/noble/clang-format-18.
 
             _(execution **${{ github.run_id }}** / attempt **${{ github.run_attempt }}**)_
           comment_tag: execution