[Security] Bump @actions/core from 1.2.0 to 1.2.6

[dependabot-preview]

Bumps @actions/core from 1.2.0 to 1.2.6.

Changelog

Sourced from @actions/core's changelog.

1.2.6

• Update exportVariable and addPath to use environment files

1.2.5

• Correctly bundle License File with package

1.2.4

• Be more lenient in accepting non-string command inputs
• Add Echo commands

1.2.3

• IsDebug logging

1.2.2

• Fix escaping for runner commands

1.2.1

• Remove trailing comma from commands
• Add "types" to package.json

Commits

• See full diff in compare view

Maintainer changes

This version was pushed to npm by thboop, a new releaser for @actions/core since your current version.

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[dependabot-preview]

The following labels could not be found: :game_die: dependencies, :robot: bot.

[dependabot-preview]

We've just been alerted that this update fixes a security vulnerability:

Sourced from The GitHub Security Advisory Database.

Environment Variable Injection in GitHub Actions

Impact

The @actions/core npm module addPath and exportVariable functions communicate with the Actions Runner over stdout by generating a string in a specific format. Workflows that log untrusted data to stdout may invoke these commands, resulting in the path or environment variables being modified without the intention of the workflow or action author.

Patches

The runner will release an update that disables the set-env and add-path workflow commands in the near future. For now, users should upgrade to @actions/core v1.2.6 or later, and replace any instance of the set-env or add-path commands in their workflows with the new Environment File Syntax. Workflows and actions using the old commands or older versions of the toolkit will start to warn, then error out during workflow execution.

Workarounds

None, it is strongly suggested that you upgrade as soon as possible.

For more information

... (truncated)

Affected versions: ["< 1.2.6"]

[dependabot-preview]

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