Update OpenKeychain to 5.7 (57000)

metadata/org.sufficientlysecure.keychain.yml

@@ -726,6 +726,21 @@ Builds:
       - extern/bouncycastle/pg/src/test
       - OpenKeychain/src/test/resources/OpenPGP-Haskell/tests
 
+  - versionName: '5.7'
+    versionCode: 57000
+    commit: v5.7
+    subdir: OpenKeychain
+    submodules: true
+    gradle:
+      - fdroid
+    prebuild: echo 'org.gradle.jvmargs=-Xmx1g' >> ../gradle.properties
+    scandelete:
+      - extern/bouncycastle/libs
+      - extern/bouncycastle/test
+      - extern/bouncycastle/core/src/test
+      - extern/bouncycastle/pg/src/test
+      - OpenKeychain/src/test/resources/OpenPGP-Haskell/tests
+
 MaintainerNotes: |-
     Summary and Description are maintained by upstream using fastlane in
     the source repo:
@@ -733,5 +748,5 @@ MaintainerNotes: |-
 
 AutoUpdateMode: Version v%v
 UpdateCheckMode: Tags ^v[0-9.]+$
-CurrentVersion: 5.6.2
-CurrentVersionCode: 56200
+CurrentVersion: '5.7'
+CurrentVersionCode: 57000