Update year in license files

In last year's update (D48219) it was suggested that the release manager
might want to do this, so here we go.

llvm-svn: 351194
GitOrigin-RevId: eb60fbfdb43cb8583eda1e338b3489ddef332f10
1 file changed
tree: b8d2d09afee1bb6cb80dbefa020fdd5447172934
  1. .arcconfig
  2. .clang-format
  3. .clang-tidy
  4. CMakeLists.txt
  5. README.rst
  6. acxxel/