fix: flank_snapshot requires direct shard value
-1 shards -> 50 shards
fix: adjust flank-x86.yml shard value
try old results generator in flank-x86.yml
fix: legacy-junit-report -> legacy-junit-result
revert to modern reporting
* Bump taskgraph to latest revision
* Change Flank url
The repository moved from github.com/TestArmada/flank to
github.com/Flank/flank, and the curl command in the ui-tests Dockerfile
currently fails because of the redirection.