[pango/harfbuzz-main] Use harfbuzz from the main branch

[Matthias Clasen <matthiasc src gnome org>]

commit 5e9bf272f6215bc47d21fd0114b2d27d1a6754c3
Author: Matthias Clasen <mclasen redhat com>
Date:   Sat Jun 5 08:04:43 2021 -0400

    Use harfbuzz from the main branch
    
    harfbuzz master got renamed to main.

 subprojects/harfbuzz.wrap | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/subprojects/harfbuzz.wrap b/subprojects/harfbuzz.wrap
index 6fdcb633..10b770d4 100644
--- a/subprojects/harfbuzz.wrap
+++ b/subprojects/harfbuzz.wrap
@@ -2,5 +2,5 @@
 directory=harfbuzz
 url=https://github.com/harfbuzz/harfbuzz.git
 push-url=git github com:harfbuzz/harfbuzz.git
-revision=master
+revision=main
 depth=1