Rollup merge of rust-lang#145160 - xizheyin:behind-upstream, r=Urgau

Change days-threshold to 28 in [behind-upstream]

Make the days-threshold to 28 to reduce false positives.

[#triagebot > Outdated commit message](https://rust-lang.zulipchat.com/#narrow/channel/224082-triagebot/topic/Outdated.20commit.20message)

r? ````@Urgau````

cc ````@jieyouxu````

Author: Zalathar

triagebot.toml

@@ -1573,7 +1573,7 @@ changelog-branch = "master"
 [note]
 
 [behind-upstream]
-days-threshold = 14
+days-threshold = 28
 
 # Canonicalize issue numbers to avoid closing the wrong issue
 # when commits are included in subtrees, as well as warning links in commits.