Add ISPC v1.22.0 (#5763)

ISPC v1.22.0 has been released. Related change:
compiler-explorer/infra#1154

etc/config/ispc.amazon.properties

@@ -1,9 +1,11 @@
 compilers=&ispc
-defaultCompiler=ispc1210
+defaultCompiler=ispc1220
 
-group.ispc.compilers=ispc1210:ispc1200:ispc1190:ispc1180:ispc1170:ispc1161:ispc1160:ispc1150:ispc1141:ispc1140:ispc1130:ispc1120:ispc1110:ispc1100:ispc192:ispc191:ispc-trunk:ispc-templates_new-trunk
+group.ispc.compilers=ispc1220:ispc1210:ispc1200:ispc1190:ispc1180:ispc1170:ispc1161:ispc1160:ispc1150:ispc1141:ispc1140:ispc1130:ispc1120:ispc1110:ispc1100:ispc192:ispc191:ispc-trunk:ispc-templates_new-trunk
 group.ispc.isSemVer=true
 group.ispc.baseName=ispc
+compiler.ispc1220.exe=/opt/compiler-explorer/ispc-1.22.0/bin/ispc
+compiler.ispc1220.semver=1.22.0
 compiler.ispc1210.exe=/opt/compiler-explorer/ispc-1.21.0/bin/ispc
 compiler.ispc1210.semver=1.21.0
 compiler.ispc1200.exe=/opt/compiler-explorer/ispc-1.20.0/bin/ispc