Disable SDL, increase timeout to 4.5 hours

.azure/pipelines/ci.yml

@@ -639,7 +639,7 @@ stages:
       publishInstallersAndChecksums: true
       # This is to enable SDL runs part of Post-Build Validation Stage
       SDLValidationParameters:
-        enable: true
+        enable: false
         continueOnError: false
         params: ' -SourceToolsList @("policheck","credscan")
         -TsaInstanceURL $(_TsaInstanceURL)

.azure/pipelines/jobs/default-build.yml

@@ -58,7 +58,7 @@ parameters:
   installTar: true
   installNodeJs: true
   installJdk: true
-  timeoutInMinutes: 180
+  timeoutInMinutes: 270
 
   # We need longer than the default amount of 5 minutes to upload our logs/artifacts. (We currently take around 5 mins in the best case).
   # This makes sure we have time to upload everything in the case of a build timeout - really important for investigating a build