test: Allow redact file size w/o fraction

`cargo clean` shows file size without fraction in summary when the size
is lower than 1024. And we need to avoid matching things like `%2B%23..`
found in other test cases, the trailing `\s` is added to regex.

crates/cargo-test-support/src/compare.rs

@@ -171,7 +171,7 @@ fn add_common_redactions(subs: &mut snapbox::Redactions) {
     .unwrap();
     subs.insert(
         "[FILE_SIZE]",
-        regex!(r"(?<redacted>[0-9]+(\.[0-9]+)([a-zA-Z]i)?)B"),
+        regex!(r"(?<redacted>[0-9]+(\.[0-9]+)?([a-zA-Z]i)?)B\s"),
     )
     .unwrap();
     subs.insert(