update pygments to support python3

vendor/pygments/tests/examplefiles/cbmbas_example

@@ -0,0 +1,9 @@
+10 rem cbm basic v2 example
+20 rem comment with keywords: for, data
+30 dim a$(20)
+35 rem the typical space efficient form of leaving spaces out:
+40 fort=0to15:poke646,t:print"{revers on}     ";:next
+50 geta$:ifa$=chr$(0):goto40
+55 rem it is legal to omit the closing " on line end
+60 print"{white}":print"bye...
+70 end