style: cpp: update for clang-format-19

There are a few options in our .clang-format file that are
deprecated in clang 19 and have alternative configurations
that match the same intention.  Update our .clang-format to
be compliant.

Signed-off-by: Patrick Williams <patrick@stwcx.xyz>
Change-Id: Ie2f6eb3b043f2d655c9df806815afd7971fd0947
diff --git a/style/cpp/.clang-format b/style/cpp/.clang-format
index 28e3328..a75a2c2 100644
--- a/style/cpp/.clang-format
+++ b/style/cpp/.clang-format
@@ -17,9 +17,7 @@
 AllowShortIfStatementsOnASingleLine: Never
 AllowShortLambdasOnASingleLine: true
 AllowShortLoopsOnASingleLine: false
-AlwaysBreakAfterReturnType: None
 AlwaysBreakBeforeMultilineStrings: false
-AlwaysBreakTemplateDeclarations: Yes
 BinPackArguments: true
 BinPackParameters: true
 BitFieldColonSpacing: None
@@ -43,12 +41,14 @@
   SplitEmptyRecord:     false
   SplitEmptyNamespace:  false
 BreakAfterAttributes: Never
+BreakAfterReturnType: Automatic
 BreakBeforeBinaryOperators: None
 BreakBeforeBraces: Custom
 BreakBeforeTernaryOperators: true
 BreakConstructorInitializers: AfterColon
 BreakInheritanceList: AfterColon
 BreakStringLiterals: false
+BreakTemplateDeclarations: Yes
 ColumnLimit:     80
 CommentPragmas:  '^ IWYU pragma:'
 CompactNamespaces: false