patreon step2: Use jobs to build for Windows and Linux

Apparently the two stages were not building in parallel. Specify
individual jobs that run MSVC and Linux building instead.

.ci/yuzu-patreon-step2.yml

@@ -8,10 +8,10 @@ variables:
   DisplayVersion: $[counter(variables['DisplayPrefix'], 1)]
 
 stages:
-- stage: build_gcc
-  displayName: 'build-gcc'
+- stage: build
+  displayName: 'build'
   jobs:
-  - job: build
+  - job: linux
     timeoutInMinutes: 120
     displayName: 'linux'
     pool:
@@ -32,11 +32,7 @@ stages:
         artifactSource: 'false'
         cache: $(parameters.cache)
         version: $(DisplayVersion)
-- stage: build_msvc
-  dependsOn: []
-  displayName: 'build-msvc'
-  jobs:
-  - job: build
+  - job: msvc
     timeoutInMinutes: 120
     displayName: 'windows'
     pool:
@@ -53,9 +49,7 @@ stages:
         version: $(DisplayVersion)
 - stage: release
   displayName: 'release'
-  dependsOn:
-  - build_gcc
-  - build_msvc
+  dependsOn: build
   jobs:
     - job: release
       displayName: 'source'