Update SharpZipLib

[stevejgordon]

No description provided.

[stevejgordon]

Test failures relate to the v2 index template API but don't occur locally. Suspect this is a timing issue. Will investigate outside of this PR.

[github-actions]

The backport to 7.17 failed:

The process '/usr/bin/git' failed with exit code 1

To backport manually, run these commands in your terminal:

# Fetch latest updates from GitHub
git fetch
# Create a new working tree
git worktree add .worktrees/backport-7.17 7.17
# Navigate to the new working tree
cd .worktrees/backport-7.17
# Create a new branch
git switch --create backport-6106-to-7.17
# Cherry-pick the merged commit of this pull request and resolve the conflicts
git cherry-pick --mainline 1 2f82491d5827c8438cea6da9e3be630369d53f4f
# Push it to GitHub
git push --set-upstream origin backport-6106-to-7.17
# Go back to the original working tree
cd ../..
# Delete the working tree
git worktree remove .worktrees/backport-7.17

Then, create a pull request where the base branch is 7.17 and the compare/head branch is backport-6106-to-7.17.