chore: Require astyle 3.4.13 and switch to --project

- Bump required astyle from 3.0.1 to 3.4.13 to enable easy installs via
  pipx/uvx from PyPI.
- Keep formatting stable: 3.4.13 matches our current output, whereas 3.6.9
  changes continuation-line indentation (e.g., after &&).
- Use `--project` (available since 3.2) instead of `--options` to simplify
  config discovery.

No formatting diffs expected with the current `.astylerc`

runastyle

@@ -11,7 +11,7 @@ cd $SCRIPT_DIR
 # To require a newer astyle version, update ASTYLE_VERSION below.
 # ASTYLE_VERSION_STR is then constructed to match the beginning of the
 # version string reported by "astyle --version".
-ASTYLE_VERSION="3.0.1"
+ASTYLE_VERSION="3.4.13"
 ASTYLE_VERSION_STR="Artistic Style Version ${ASTYLE_VERSION}"
 ASTYLE="astyle"
 
@@ -22,5 +22,6 @@ if [[ "$DETECTED_VERSION_STR" != ${ASTYLE_VERSION_STR}* ]]; then
     exit 1;
 fi
 
-$ASTYLE --options="$SCRIPT_DIR/.astylerc" *.cpp
-$ASTYLE --options="$SCRIPT_DIR/.astylerc" *.h
+# Run astyle with the project config
+$ASTYLE --project *.cpp
+$ASTYLE --project *.h

runastyle.bat

@@ -14,7 +14,7 @@ CD /d %SCRIPT_DIR%
 REM To require a newer astyle version, update ASTYLE_VERSION below.
 REM ASTYLE_VERSION_STR is then constructed to match the beginning of the
 REM version string reported by "astyle --version".
-SET ASTYLE_VERSION="3.0.1"
+SET ASTYLE_VERSION="3.4.13"
 SET ASTYLE_VERSION_STR="Artistic Style Version %ASTYLE_VERSION%"
 SET ASTYLE="astyle"
 
@@ -28,8 +28,9 @@ ECHO %DETECTED_VERSION_STR% | FINDSTR /B /C:%ASTYLE_VERSION_STR% > nul && (
     GOTO EXIT_ERROR
 )
 
-%ASTYLE% --options="%SCRIPT_DIR%/.astylerc" *.cpp
-%ASTYLE% --options="%SCRIPT_DIR%/.astylerc" *.h
+REM Run astyle with the project config
+%ASTYLE% --project *.cpp
+%ASTYLE% --project *.h
 GOTO :EOF
 
 :EXIT_ERROR