Merge pull request #981 from libgit2/cmn/update-libgit2

Update libgit2 to 15668ba5

Author: carlosmn

.github/workflows/ci.yml

@@ -13,7 +13,7 @@ jobs:
       fail-fast: false
       matrix:
         ruby: [ '2.6', '2.7', '3.0', '3.1', '3.2' ]
-        os: [ macOS-latest ]
+        os: [ macOS-12 ]
     runs-on: ${{ matrix.os }}
 
     name: Ruby ${{ matrix.ruby }} on ${{ matrix.os }}

ext/rugged/rugged_commit.c

@@ -564,7 +564,7 @@ static VALUE rb_git_commit_create(VALUE self, VALUE rb_repo, VALUE rb_data)
 		commit_data.message,
 		commit_data.tree,
 		commit_data.parent_count,
-		commit_data.parents);
+		(git_commit * const *) commit_data.parents);
 
 cleanup:
 	free_commit_options(&commit_data);
@@ -813,7 +813,7 @@ static VALUE rb_git_commit_create_to_s(VALUE self, VALUE rb_repo, VALUE rb_data)
 		commit_data.message,
 		commit_data.tree,
 		commit_data.parent_count,
-		commit_data.parents);
+		(git_commit * const *) commit_data.parents);
 
 cleanup:
 	free_commit_options(&commit_data);