Update actions/cache action to v2.1.8

[renovate]

This PR contains the following updates:

Package	Type	Update	Change
actions/cache	action	patch	v2.1.4 -> v2.1.8

---

Release Notes

actions/cache (actions/cache)

v2.1.8: Updating actions/core to version 1.10.0

Compare Source

The ::save-state and ::set-output are deprecated. The newer version of actions/core >1.10.0 uses the new syntax for save and set output. After this change, customers using actions/cache@v2 won't see deprecation warning message.

v2.1.7

Compare Source

Support 10GB cache upload using the latest version 1.0.8 of @actions/cache

v2.1.6

Compare Source

• Catch unhandled "bad file descriptor" errors that sometimes occurs when the cache server returns non-successful response (https://github.com/actions/cache/pull/596)

v2.1.5

Compare Source

• Fix permissions error seen when extracting caches with GNU tar that were previously created using BSD tar (https://github.com/actions/cache/issues/527)

---

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.

[nils-a]

Superseded by #44

[nils-a]

Superseded by #44

[nils-a]

Superseded by #44