Add missing dependencies that the RBS signatures reference

Author: sferik

sig/manifest.yaml

@@ -1,3 +1,9 @@
 dependencies:
   - name: net-protocol
+  - name: open-uri
+  - name: openssl
+  - name: socket
+  - name: strscan
+  - name: timeout
   - name: uri
+  - name: zlib