package/babeld: update URL site

As reported in [1], version 1.9.2 has been moved to another archive, and
it is recommended to use https://github.com/jech/babeld as the official
repository.

The use of the github macro:

$(call github,jech,babeld,babeld-$(BABELD_VERSION))

would have downloaded a file with the same name (e.g. babeld-1.9.2.tar.gz)
but with a different hash from the one downloaded from the previous URL,
creating unacceptable backward compatibility issues.
Therefore, it was decided to download the package via the git method. In
this way, the downloaded file is babeld-babeld-1.9.2-git4.tar.gz, thus
with a different name, to which its SHA can be associated without side
effects, except for breaking the release monitoring process.
Unfortunately, for now, we will have to live with this limitation.

Particularly interesting are the explanations provided by Yann E. Morin,
which you can find in [2], that guided the creation of this patch.

Fixes:
- http://autobuild.buildroot.org/results/2447060c86acf1bd8d6ee0bcf8f9b6adcdfc50c9

[1] https://alioth-lists.debian.net/pipermail/babel-users/2024-August/004187.html
[2] https://patchwork.ozlabs.org/project/buildroot/patch/20240901063634.3504315-1-dario.binacchi@amarulasolutions.com/

Co-Developed-by: Yann E. MORIN <yann.morin.1998@free.fr>
Signed-off-by: Yann E. MORIN <yann.morin.1998@free.fr>
Signed-off-by: Dario Binacchi <dario.binacchi@amarulasolutions.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
diff --git a/package/babeld/babeld.hash b/package/babeld/babeld.hash
index 2e0513e..1c534d6 100644
--- a/package/babeld/babeld.hash
+++ b/package/babeld/babeld.hash
@@ -1,3 +1,3 @@
 # Locally computed
-sha256  154f00e0a8bf35d6ea9028886c3dc5c3c342dd1a367df55ef29a547b75867f07  babeld-1.9.2.tar.gz
+sha256  22549e27645ecb9ef4c715a3cbeea01fa2dc7ea6951e8f97dc9c4a7b2a1de8f5  babeld-babeld-1.9.2-git4.tar.gz
 sha256  b415c41292cedef6c97b243609e50552887c29343566c639f23282d31efd2afd  LICENCE
diff --git a/package/babeld/babeld.mk b/package/babeld/babeld.mk
index 785fa2b..ac32e79 100644
--- a/package/babeld/babeld.mk
+++ b/package/babeld/babeld.mk
@@ -4,8 +4,9 @@
 #
 ################################################################################
 
-BABELD_VERSION = 1.9.2
-BABELD_SITE = http://www.pps.univ-paris-diderot.fr/~jch/software/files
+BABELD_VERSION = babeld-1.9.2
+BABELD_SITE = https://github.com/jech/babeld
+BABELD_SITE_METHOD = git
 BABELD_LICENSE = MIT
 BABELD_LICENSE_FILES = LICENCE