Update httpd

Changes:

- https://github.com/docker-library/httpd/commit/3ebff8d: Set STOPSIGNAL to WINCH for httpd's "graceful-stop"

library/httpd

@@ -6,10 +6,10 @@ GitRepo: https://github.com/docker-library/httpd.git
 
 Tags: 2.4.41, 2.4, 2, latest
 Architectures: amd64, arm32v5, arm32v7, arm64v8, i386, ppc64le, s390x
-GitCommit: fd8bc2a3fc3219f9bdfcbb32eaf3f3abce77961b
+GitCommit: 3ebff8dadf1e38dbe694ea0b8f379f6b8bcd993e
 Directory: 2.4
 
 Tags: 2.4.41-alpine, 2.4-alpine, 2-alpine, alpine
 Architectures: amd64, arm32v6, arm32v7, arm64v8, i386, ppc64le, s390x
-GitCommit: fd8bc2a3fc3219f9bdfcbb32eaf3f3abce77961b
+GitCommit: 3ebff8dadf1e38dbe694ea0b8f379f6b8bcd993e
 Directory: 2.4/alpine