fix: missing git author

cmd/rp/cmd/run.go

@@ -278,7 +278,10 @@ func reconcileReleasePR(ctx context.Context, forge rp.Forge, changesets []rp.Cha
 	}
 
 	releaseCommitMessage := fmt.Sprintf("chore(%s): release %s", flagBranch, nextVersion)
-	releaseCommitHash, err := worktree.Commit(releaseCommitMessage, &git.CommitOptions{})
+	releaseCommitHash, err := worktree.Commit(releaseCommitMessage, &git.CommitOptions{
+		Author:    rp.GitSignature(),
+		Committer: rp.GitSignature(),
+	})
 	if err != nil {
 		return fmt.Errorf("failed to commit changes: %w", err)
 	}

git.go

@@ -4,9 +4,11 @@ import (
 	"context"
 	"fmt"
 	"os"
+	"time"
 
 	"github.com/go-git/go-git/v5"
 	"github.com/go-git/go-git/v5/plumbing"
+	"github.com/go-git/go-git/v5/plumbing/object"
 	"github.com/go-git/go-git/v5/plumbing/transport"
 )
 
@@ -46,3 +48,11 @@ func CloneRepo(ctx context.Context, cloneURL, branch string, auth transport.Auth
 
 	return repo, nil
 }
+
+func GitSignature() *object.Signature {
+	return &object.Signature{
+		Name:  "releaser-pleaser",
+		Email: "",
+		When:  time.Now(),
+	}
+}