AUTHORS: Add Alvin Che-Chia Chang, Andreas Wilhelm, Piotr Idzik, William Jakobsson [skip ci] (cppcheck-opensource#8608)

Co-authored-by: William Jakobsson <william.jakobsson@cppcheck.com>

Author: wjakobsson

AUTHORS

@@ -22,6 +22,7 @@ Alexey Eryomenko
 Alexey Zhikhartsev
 Alfi Maulana
 Ali Can Demiralp
+Alvin Che-Chia Chang
 Allen Winter
 Alon Alexander
 Alon Liberman
@@ -33,6 +34,7 @@ Andreas Lutsch
 Andreas Pokorny
 Andreas Rönnquist
 Andreas Vollenweider
+Andreas Wilhelm
 Andrei Karas
 Andrew C Aitchison
 Andrew C. Martin
@@ -328,6 +330,7 @@ Philip Chimento
 Philipp Kloke
 Pierre Schweitzer
 Pieter Duchi
+Piotr Idzik
 Pino Toscano
 Pranav Khanna
 Radek Jarecki
@@ -435,6 +438,7 @@ Vladimir Petrigo
 Wang Haoyu
 Wang Yang
 WenChung Chiu
+William Jakobsson
 Wolfgang Stöggl
 x29a
 XhmikosR