maint(windows): publish symbols is not working with new 19.0 tc scripts

[mcdurdin]

https://build.palaso.org/buildConfiguration/Keyman_Build/579572?buildTab=log&focusLine=9247&logView=flowAware&linesState=991.6455.9247

There appear to be no new symbol files in the right place; this looks like a regression introduced when we moved to repo-based TC scripts in 19.0

20:27:55     [resources/teamcity/windows] publish new symbols
20:27:55       [resources/teamcity/windows] Publishing new symbols to symbol server
20:27:56       sending incremental file list
20:27:56       ./
20:27:56       000admin/
20:27:56       
20:27:56       Number of files: 5 (reg: 3, dir: 2)
20:27:56       Number of created files: 0
20:27:56       Number of deleted files: 0
20:27:56       Number of regular files transferred: 0
20:27:56       Total file size: 13,893,804 bytes
20:27:56       Total transferred file size: 0 bytes
20:27:56       Literal data: 0 bytes
20:27:56       Matched data: 0 bytes
20:27:56       File list size: 0
20:27:56       File list generation time: 0.002 seconds
20:27:56       File list transfer time: 0.000 seconds
20:27:56       Total bytes sent: 161
20:27:56       Total bytes received: 23
20:27:56       
20:27:56       sent 161 bytes  received 23 bytes  122.67 bytes/sec
20:27:56       total size is 13,893,804  speedup is 75,509.80
20:27:56       [resources/teamcity/windows] Finished publishing new symbols to symbol server

[mcdurdin]

Same problem for Developer; https://build.palaso.org/buildConfiguration/Keyman_Developer_Release/579719?buildTab=log&focusLine=0&logView=flowAware&linesState=152