Backport of chore(e2e): Update mongodb-mongosh version into release/0.21.x

[hc-github-team-secure-boundary]

Backport

This PR is auto-generated from #6394 to be assessed for backporting due to the inclusion of the label backport/0.21.x.

The below text is copied from the body of the original PR.

---

Description

This PR attempts to address an error showing up in e2e tests

│ Err:6 https://repo.mongodb.org/apt/debian bookworm/mongodb-org/7.0 InRelease
│   Sub-process /usr/bin/sqv returned an error code (1), error message is: Signing key on E58830201F7DD82CD808AA84160D26BB1785BA38 is not bound:            No binding signature at time 2026-01-29T19:40:13Z   because: Policy rejected non-revocation signature (PositiveCertification) requiring second pre-image resistance   because: SHA1 is not considered secure since 2026-02-01T00:00:00Z
│ Hit:7 https://apache.jfrog.io/artifactory/cassandra-deb 41x InRelease
│ Reading package lists...
│ Warning: OpenPGP signature verification failed:
│ https://repo.mongodb.org/apt/debian bookworm/mongodb-org/7.0 InRelease:
│ Sub-process /usr/bin/sqv returned an error code (1), error message is:
│ Signing key on E58830201F7DD82CD808AA84160D26BB1785BA38 is not bound:
│ No binding signature at time 2026-01-29T19:40:13Z   because: Policy rejected
│ non-revocation signature (PositiveCertification) requiring second pre-image
│ resistance   because: SHA1 is not considered secure since
│ 2026-02-01T00:00:00Z
│ Error: The repository 'https://repo.mongodb.org/apt/debian
│ bookworm/mongodb-org/7.0 InRelease' is not signed.

This PR updates the version of mongodb used by the docker test runner.

PCI review checklist

• I have documented a clear reason for, and description of, the change I am making.
• If applicable, I've documented a plan to revert these changes if they require more than reverting the pull request.
• If applicable, I've documented the impact of any changes to security controls.
  Examples of changes to security controls include using new access control methods, adding or removing logging pipelines, etc.

---

Overview of commits

• f958970