update chroma to v0.8.0 (go-gitea#12337)

Author: techknowlogick

go.mod

@@ -20,7 +20,7 @@ require (
 	github.com/BurntSushi/toml v0.3.1
 	github.com/PuerkitoBio/goquery v1.5.1
 	github.com/RoaringBitmap/roaring v0.4.23 // indirect
-	github.com/alecthomas/chroma v0.7.3
+	github.com/alecthomas/chroma v0.8.0
 	github.com/bgentry/speakeasy v0.1.0 // indirect
 	github.com/blevesearch/bleve v1.0.7
 	github.com/couchbase/gomemcached v0.0.0-20191004160342-7b5da2ec40b2 // indirect

go.sum

@@ -69,8 +69,8 @@ github.com/alcortesm/tgz v0.0.0-20161220082320-9c5fe88206d7/go.mod h1:6zEj6s6u/g
 github.com/alecthomas/assert v0.0.0-20170929043011-405dbfeb8e38 h1:smF2tmSOzy2Mm+0dGI2AIUHY+w0BUc+4tn40djz7+6U=
 github.com/alecthomas/assert v0.0.0-20170929043011-405dbfeb8e38/go.mod h1:r7bzyVFMNntcxPZXK3/+KdruV1H5KSlyVY0gc+NgInI=
 github.com/alecthomas/chroma v0.7.2-0.20200305040604-4f3623dce67a/go.mod h1:fv5SzZPFJbwp2NXJWpFIX7DZS4HgV1K4ew4Pc2OZD9s=
-github.com/alecthomas/chroma v0.7.3 h1:NfdAERMy+esYQs8OXk0I868/qDxxCEo7FMz1WIqMAeI=
-github.com/alecthomas/chroma v0.7.3/go.mod h1:sko8vR34/90zvl5QdcUdvzL3J8NKjAUx9va9jPuFNoM=
+github.com/alecthomas/chroma v0.8.0 h1:HS+HE97sgcqjQGu5uVr8jIE55Mmh5UeQ7kckAhHg2pY=
+github.com/alecthomas/chroma v0.8.0/go.mod h1:sko8vR34/90zvl5QdcUdvzL3J8NKjAUx9va9jPuFNoM=
 github.com/alecthomas/colour v0.0.0-20160524082231-60882d9e2721 h1:JHZL0hZKJ1VENNfmXvHbgYlbUOvpzYzvy2aZU5gXVeo=
 github.com/alecthomas/colour v0.0.0-20160524082231-60882d9e2721/go.mod h1:QO9JBoKquHd+jz9nshCh40fOfO+JzsoXy8qTHF68zU0=
 github.com/alecthomas/kong v0.1.17-0.20190424132513-439c674f7ae0/go.mod h1:+inYUSluD+p4L8KdviBSgzcqEjUQOfC5fQDRFuc36lI=