triggers build: raidboss: support bareword keys in timeline netregex (#…

…5967)

Rather than eval (which is probably TOO lenient)
switch to using json5 instead of json parsing.

This is a followup to a TODO from #5939. e6255c3

00-misc/test.txt

@@ -18,7 +18,10 @@ hideall "--sync--"
 
 0 "--Reset--" sync /You bid farewell to the striking dummy/ window 10000 jump 0
 
+# two examples with different quoting which should both be supported
+0 "--sync--" GameLog { line: 'testNetRegexTimeline' } window 100000,100000
 0 "--sync--" GameLog { "line": "testNetRegexTimeline" } window 100000,100000
+
 0 "--sync--" sync /:Engage!/ window 100000,100000
 0 "--sync--" sync /:You bow courteously to the striking dummy/ window 0,1
 3 "Almagest"