[master] 4b37eae1e vjsn: Update test corpus script to Python 3

[Dridi Boukelmoune]

commit 4b37eae1e241dc794a65d25405368a2659870cc3
Author: Dridi Boukelmoune <dridi.boukelmoune at gmail.com>
Date:   Mon Jan 13 15:45:16 2025 +0100

    vjsn: Update test corpus script to Python 3

diff --git a/lib/libvarnish/vjsn.c b/lib/libvarnish/vjsn.c
index fc37b4095..a72f66acd 100644
--- a/lib/libvarnish/vjsn.c
+++ b/lib/libvarnish/vjsn.c
@@ -563,7 +563,7 @@ VJSN_TYPES
 	def emit(fin):
 		if fin in skip:
 			return
-		x = bytearray(open(fin).read())
+		x = bytearray(open(fin, 'rb').read())
 		if 0 in x:
 			return
 		if len(x) > 1000: