active build: iperf3 3.20→3.21, rsync 3.4.1→3.4.4, git 2.13.1→2.55.0

iPerf3 3.21 is a bug fix release from July 2025.
rsync 3.4.4 is the latest 3.4.x maintenance release.
git 2.55.0 is the latest 2.55.x stable release, fixing 9+ years of CVEs
and bugs since the Red Bear build's 2.13.1 baseline. This is a security
critical upgrade.

recipes/dev/git/recipe.toml

@@ -1,6 +1,6 @@
 [source]
-tar = "https://www.kernel.org/pub/software/scm/git/git-2.13.1.tar.xz"
-blake3 = "bc78271bffd60c5b8b938d8c08fd74dc2de8d21fbaf8f8e0e3155436d9263f17"
+tar = "https://mirrors.edge.kernel.org/pub/software/scm/git/git-2.55.0.tar.xz"
+blake3 = "99cf418d6426cd615c2818986002f3d4619c707bceea9c624414cc2362c1ff5e"
 patches = ["git.patch"]
 
 [build]