Merge topic 'clang-format-15'

3cb35bf3 CONTRIBUTING: Update documented clang-format version to 15

Acked-by: Kitware Robot <kwrobot@kitware.com>
Merge-request: !273

.clang-format

 ---
-# This configuration requires clang-format version 6.0 exactly.
+# This configuration requires clang-format version 15 exactly.
 BasedOnStyle: Mozilla
 AlignOperands: false
 AllowShortFunctionsOnASingleLine: InlineOnly

CONTRIBUTING.rst

@@ -27,7 +27,7 @@ copies of KWSys within dependent projects can be updated to get the changes.
 Code Style
 ==========
 
-We use `clang-format`_ version **6.0** to define our style for C++ code in
+We use `clang-format`_ version **15** to define our style for C++ code in
 the KWSys source tree.  See the `.clang-format`_ configuration file for
 our style settings.  Use the `clang-format.bash`_ script to format source
 code.  It automatically runs ``clang-format`` on the set of source files