[GitHub][workflows] Use latest clang-format version 18.1.7 (llvm#95757)

Since clang-format 18.1.4, there have been a number of commits that
fixed various kinds of issues:

- Bug
3ceccbd

- Regression
6dbaa89
51ff7f3
35fea10
7699b34
768118d
8c0fe0d

- Crash
f1491c7

- Invalid code generation
0abb89a

Author: owenca

.github/workflows/pr-code-format.yml

@@ -55,7 +55,7 @@ jobs:
       - name: Install clang-format
         uses: aminya/setup-cpp@v1
         with:
-          clangformat: 18.1.1
+          clangformat: 18.1.7
 
       - name: Setup Python env
         uses: actions/setup-python@v5