chore(deps): update dependencies

vendor/github.com/alecthomas/chroma/lexers/internal/api.go

@@ -146,16 +146,19 @@ func Register(lexer chroma.Lexer) chroma.Lexer {
 	return lexer
 }
 
-// Used for the fallback lexer as well as the explicit plaintext lexer
-var PlaintextRules = chroma.Rules{
-	"root": []chroma.Rule{
-		{`.+`, chroma.Text, nil},
-		{`\n`, chroma.Text, nil},
-	},
+// PlaintextRules is used for the fallback lexer as well as the explicit
+// plaintext lexer.
+func PlaintextRules() chroma.Rules {
+	return chroma.Rules{
+		"root": []chroma.Rule{
+			{`.+`, chroma.Text, nil},
+			{`\n`, chroma.Text, nil},
+		},
+	}
 }
 
 // Fallback lexer if no other is found.
-var Fallback chroma.Lexer = chroma.MustNewLexer(&chroma.Config{
+var Fallback chroma.Lexer = chroma.MustNewLazyLexer(&chroma.Config{
 	Name:      "fallback",
 	Filenames: []string{"*"},
 }, PlaintextRules)