fix: syntax

.gitlab/ci/cibuildwheel_build_deps_before_build_wheel.ps1

 $ErrorActionPreference = "Stop"
 
-$AIDGE_DEPENDENCIES = Invoke-Expression $env:AIDGE_DEPENDENCIES
+$AIDGE_DEPENDENCIES = $(Invoke-Expression $env:AIDGE_DEPENDENCIES)
 Write-Host "Aidge dependencies : $AIDGE_DEPENDENCIES"
 if ( $($AIDGE_DEPENDENCIES.Length) -eq 0) {
         Write-Host "- No dependencies provided for current repsitory"