support 1.x automation env var in tauri-driver

[chippers]

the env var for automation changed in 2.x, but that update for tauri-driver was released as a patch causing breakage for everyone not pinned to a specific patch version

[github-actions]

Package Changes Through 65cc6b4

There are 13 changes which include tauri-utils with prerelease, tauri-cli with prerelease, @tauri-apps/cli with prerelease, tauri-build with prerelease, tauri-runtime-wry with prerelease, tauri-driver with prepatch, tauri with prerelease, tauri-runtime with prerelease, tauri-macros with prepatch, tauri-codegen with prerelease, tauri-plugin with prerelease, @tauri-apps/api with prerelease, tauri-bundler with prerelease

Planned Package Versions

The following package releases are the planned based on the context of changes in this pull request.

package	current	next
@tauri-apps/api	2.0.0-rc.2	2.0.0-rc.3
tauri-utils	2.0.0-rc.5	2.0.0-rc.6
tauri-bundler	2.0.1-rc.4	2.0.1-rc.5
tauri-runtime	2.0.0-rc.5	2.0.0-rc.6
tauri-runtime-wry	2.0.0-rc.5	2.0.0-rc.6
tauri-codegen	2.0.0-rc.5	2.0.0-rc.6
tauri-macros	2.0.0-rc.5	2.0.1-rc.0
tauri-plugin	2.0.0-rc.5	2.0.0-rc.6
tauri-build	2.0.0-rc.5	2.0.0-rc.6
tauri	2.0.0-rc.5	2.0.0-rc.6
@tauri-apps/cli	2.0.0-rc.6	2.0.0-rc.7
tauri-cli	2.0.0-rc.6	2.0.0-rc.7
tauri-driver	0.1.4	0.1.5-rc.0

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