Runner v2.273.6 start to error out due to ::set-env name

[ghost]

Description:
Starting with runner versions >2.273.6 the runners error out if the syntax ::set-env is used.

Task version:
1.4.3

Platform:

• Ubuntu
• macOS
• Windows

Runner type:

• Hosted
• Self-hosted, version: 2.277.1

Repro steps:
Take any runner above 2.273.6 and setup-java, e.g. with:

      - name: Configure java 11
        uses: actions/setup-java@v1
        with:
          java-version: 11
          server-id: maven-public
          server-username: NEXUS_USER
          server-password: NEXUS_PASSWORD

Expected behavior:
Works.

Actual behavior:
Errors out with:

::set-env name=JAVA_HOME_11_0_10_X64::/opt/hostedtoolcache/jdk/11.0.10/x64
##[error]Unable to process command '::set-env name=JAVA_HOME_11_0_10_X64::/opt/hostedtoolcache/jdk/11.0.10/x64' successfully.
##[error]The `set-env` command is disabled. Please upgrade to using Environment Files or opt into unsecure command execution by setting the `ACTIONS_ALLOW_UNSECURE_COMMANDS` environment variable to `true`. For more information see: https://github.blog/changelog/2020-10-01-github-actions-deprecating-set-env-and-add-path-commands/
##[debug]System.Exception: The `set-env` command is disabled. Please upgrade to using Environment Files or opt into unsecure command execution by setting the `ACTIONS_ALLOW_UNSECURE_COMMANDS` environment variable to `true`. For more information see: https://github.blog/changelog/2020-10-01-github-actions-deprecating-set-env-and-add-path-commands/
##[debug]   at GitHub.Runner.Worker.SetEnvCommandExtension.ProcessCommand(IExecutionContext context, String line, ActionCommand command, ContainerInfo container)
##[debug]   at GitHub.Runner.Worker.ActionCommandManager.TryProcessCommand(IExecutionContext context, String input, ContainerInfo container)
::add-path::/opt/hostedtoolcache/jdk/11.0.10/x64/bin
##[error]Unable to process command '::add-path::/opt/hostedtoolcache/jdk/11.0.10/x64/bin' successfully.
##[error]The `add-path` command is disabled. Please upgrade to using Environment Files or opt into unsecure command execution by setting the `ACTIONS_ALLOW_UNSECURE_COMMANDS` environment variable to `true`. For more information see: https://github.blog/changelog/2020-10-01-github-actions-deprecating-set-env-and-add-path-commands/

Due to:
actions/runner#779
actions/runner#784

[maxim-lobanov]

Hello @dominikmeyersap ,
This task was updated to use environments files 5 months ago via #104
Both v1 and v1.4.3 contains these changes. Also I can't reproduce it on Hosted runner.

Do you use GitHub Enterprise? (as far as I know it requires manual sync of task version)

[ghost]

🤦‍♂️ 🤒 Of course we do and I just updated the version and it worked. Please disregard we did not see the 5 letters difference in the path and wondered. How on earth is it possible that no one reported that 💯