i3-gaps: update to 4.20.

Closes: #33635 [via git-merge-pr]

srcpkgs/i3-gaps/template

@@ -1,7 +1,7 @@
 # Template file for 'i3-gaps'
 pkgname=i3-gaps
-version=4.19.1
-revision=2
+version=4.20
+revision=1
 wrksrc="i3-${version}"
 build_style=meson
 configure_args="-Dmans=true"
@@ -17,7 +17,7 @@ maintainer="ian c. <ian@airmail.cc>"
 license="BSD-3-Clause"
 homepage="https://github.com/Airblader/i3"
 distfiles="${homepage}/archive/${version}.tar.gz>${version}.tar.gz"
-checksum=97f33544f0a64a325b7b98cd4ad17dcf6f2c8ead1350d378154b76af1798e8fc
+checksum=6ae967b31b35bdf0856faae49f66db95e77aa55266764950f9665dfce16cdfbf
 
 provides="i3-${version}_${revision}"
 replaces="i3>=0"