Update dependency @actions/core to v1.2.6

[renovate]

This PR contains the following updates:

Package	Type	Update	Change
@actions/core	dependencies	patch	1.2.4 -> 1.2.6

---

Renovate configuration

📅 Schedule: At any time (no schedule defined).

🚦 Automerge: Disabled by config. Please merge this manually once you are satisfied.

♻️ 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 WhiteSource Renovate. View repository job log here.

[codecov]

Codecov Report

Merging #61 into master will not change coverage.
The diff coverage is n/a.

@@            Coverage Diff            @@
##            master       #61   +/-   ##
=========================================
  Coverage   100.00%   100.00%           
=========================================
  Files            7         7           
  Lines          196       196           
  Branches        33        36    +3     
=========================================
  Hits           196       196           

---

Continue to review full report at Codecov.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update b90713b...2bbf0df. Read the comment docs.