libgit2: upgrade 1.8.1 -> 1.8.2

Changelog (https://github.com/libgit2/libgit2/releases/tag/v1.8.2):

- This release reverts a const-correctness change introduced in
v1.8.0 for the git_commit_create functions. We now retain the
const-behavior for the commits arguments from prior to v1.8.0.

This change was meant to resolve compatibility issues with bindings
and downstream users.

What's Changed

New features
- Introduce a stricter debugging allocator for testing by ethomson in #6811

Bug fixes
- Fix constness issue introduced in #6716 by ethomson in #6829

Build and CI improvements
- README: add experimental builds to ci table by ethomson in #6816

(From OE-Core rev: 258e6c2f12e072e94c4e546baa4b7a0ebfb37427)

Signed-off-by: Trevor Gamblin <tgamblin@baylibre.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

meta/recipes-support/libgit2/libgit2_1.8.2.bb

@@ -0,0 +1,21 @@
+SUMMARY = "the Git linkable library"
+HOMEPAGE = "http://libgit2.github.com/"
+LICENSE = "GPL-2.0-with-GCC-exception & MIT & OpenSSL & BSD-3-Clause & Zlib & ISC & LGPL-2.1-or-later & CC0-1.0 & BSD-2-Clause"
+LIC_FILES_CHKSUM = "file://COPYING;md5=8eacfdc17c8f4d219e131a073973b97d"
+
+DEPENDS = "curl openssl zlib libssh2 libgcrypt libpcre2"
+
+SRC_URI = "git://github.com/libgit2/libgit2.git;branch=main;protocol=https"
+SRCREV = "4ce872a0fd5f40fc4282befd9b72e9ddebd22d02"
+
+S = "${WORKDIR}/git"
+
+inherit cmake
+
+EXTRA_OECMAKE = "\
+    -DBUILD_TESTS=OFF \
+    -DCMAKE_BUILD_TYPE=RelWithDebInfo \
+    -DREGEX_BACKEND='pcre2' \
+"
+
+BBCLASSEXTEND = "native"