chore: Upgrade to snapbox 0.6.7

This comes with improved redacting on mismatches which will provide
more focused assertions and there will be less need for intervention on
snapshot updates.

This also gives more flexibility with placeholders

Author: epage

Cargo.lock

@@ -91,7 +91,7 @@ sha1 = "0.10.6"
 sha2 = "0.10.8"
 shell-escape = "0.1.5"
 supports-hyperlinks = "3.0.0"
-snapbox = { version = "0.6.5", features = ["diff", "dir", "term-svg", "regex"] }
+snapbox = { version = "0.6.7", features = ["diff", "dir", "term-svg", "regex"] }
 tar = { version = "0.4.40", default-features = false }
 tempfile = "3.10.1"
 thiserror = "1.0.59"