ci: use cleanup instead of always step in post steps

Simply appropriate.
https://www.jenkins.io/doc/book/pipeline/syntax/#post

Signed-off-by: Jakub Sokołowski <jakub@status.im>

ci/Jenkinsfile.linux

@@ -96,6 +96,6 @@ pipeline {
   post {
     success { script { github.notifyPR(true) } }
     failure { script { github.notifyPR(false) } }
-    always { cleanWs() }
+    cleanup { cleanWs() }
   }
 }

ci/Jenkinsfile.linux-cpp

@@ -85,6 +85,6 @@ pipeline {
   post {
     success { script { github.notifyPR(true) } }
     failure { script { github.notifyPR(false) } }
-    always { cleanWs() }
+    cleanup { cleanWs() }
   }
 }

ci/Jenkinsfile.macos

@@ -108,6 +108,6 @@ pipeline {
   post {
     success { script { github.notifyPR(true) } }
     failure { script { github.notifyPR(false) } }
-    always { cleanWs() }
+    cleanup { cleanWs() }
   }
 }

ci/Jenkinsfile.macos-cpp.todo

@@ -77,6 +77,6 @@ pipeline {
   post {
     success { script { github.notifyPR(true) } }
     failure { script { github.notifyPR(false) } }
-    always { cleanWs() }
+    cleanup { cleanWs() }
   }
 }

ci/Jenkinsfile.uitests

@@ -144,6 +144,6 @@ pipeline {
   post {
     success { script { github.notifyPR(true) } }
     failure { script { github.notifyPR(false) } }
-    always { cleanWs() }
+    cleanup { cleanWs() }
   }
 }

ci/Jenkinsfile.windows

@@ -99,6 +99,6 @@ pipeline {
   post {
     success { script { github.notifyPR(true) } }
     failure { script { github.notifyPR(false) } }
-    always { cleanWs(disableDeferredWipeout: true) }
+    cleanup { cleanWs(disableDeferredWipeout: true) }
   }
 }

ci/Jenkinsfile.windows-cpp.todo

@@ -78,6 +78,6 @@ pipeline {
   post {
     success { script { github.notifyPR(true) } }
     failure { script { github.notifyPR(false) } }
-    always { cleanWs() }
+    cleanup { cleanWs() }
   }
 }