iTerm2: update prompts even for the latest version (3.2.5)

[yan12125 (Chih-Hsuan Yen)]

Thanks to eborisch, MacPorts now ships the latest iTerm2. However, the version string of this build is 'unknown' and thus users are prompted for updates. See the attached screenshot.

[yan12125 (Chih-Hsuan Yen)]

Screenshot for the update prompt

[eborisch (Eric A. Borisch)]

Click “skip this version” and call it good?

[ryandesign (Ryan Carsten Schmidt)]

Yes that's a workaround we can use until it's fixed. But it should be fixed, by using the correct version number, and by disabling the update checker (#56840).

[Chih-Hsuan Yen <yen@…>]

In 11fad010a5e07e9fdf2c839c2d2ca84bd0ce2a15/macports-ports (master):

iTerm2: update to 3.2.7 and fix version strings (​https://github.com/macports/macports-ports/pull/3616)

• iTerm2: update to 3.2.7 and fix version strings

Upstream iTerm2 ships a script tools/updateVersion.py to write version
strings to Info.plist. However, with at least Xcode 10, the correct
version strings are later overwritten by the step
"builtin-infoPlistUtility". Writing the version strings out at the
post-destroot stage can make sure they are not overwritten.

Closes: #57625

• Try to use Xcode 10.1 on Azure Pipelines

Call xcode-select as suggested [1] according to current installation
paths [2].

[1] ​https://docs.microsoft.com/en-us/azure/devops/pipelines/agents/hosted?view=azdevops&tabs=yaml#xcode
[2] ​https://github.com/Microsoft/azure-pipelines-image-generation/blob/master/images/macos/macos-Readme.md#xcode