Update dependency @openzeppelin/test-helpers to v0.5.16

[renovate]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
@openzeppelin/test-helpers	0.5.7 -> 0.5.16

---

Release Notes

OpenZeppelin/openzeppelin-test-helpers (@​openzeppelin/test-helpers)

v0.5.16

Compare Source

• Fix warning under Hardhat 2.11.

v0.5.15

Compare Source

• Fix snapshot.restore when used multiple times.

v0.5.14

Compare Source

• Add missing export of snapshot module.

v0.5.13

Compare Source

• Changed send.ether so it no longer forces gasPrice: 0.

NOTE: This may break some tests but gas price 0 is no longer valid since the London hard fork.

• Added tracker.deltaWithFees.

v0.5.12

Compare Source

• Added new snapshot module to capture and revert blockchain state.

v0.5.11

Compare Source

• Fixed expectRevert for latest versions of Hardhat.

v0.5.10

Compare Source

• Updated @truffle/contract dependency.

v0.5.9

Compare Source

• Updated @openzeppelin/contract-loader dependency.

v0.5.8

Compare Source

• Fixed expectRevert for Hardhat. (#​131)

---

Configuration

📅 Schedule: Branch creation - At any time (no schedule defined), Automerge - At any time (no schedule defined).

🚦 Automerge: Enabled.

♻ Rebasing: Whenever PR becomes conflicted, or you tick the rebase/retry checkbox.

🔕 Ignore: Close this PR and you won't be reminded about this update again.

---

• If you want to rebase/retry this PR, check this box

---

This PR has been generated by Mend Renovate. View repository job log here.