Update staging deployment to bblfsh v2.11.6

Signed-off-by: Carlos Martín <[email protected]>

Author: carlosms

.helm-defaults.yml

@@ -5,35 +5,38 @@ service:
 bblfshdServer:
   image:
     repository: bblfsh/bblfshd
-    tag: v2.10.0
+    tag: v2.11.6
     pullPolicy: IfNotPresent
   drivers:
     install: true
     languages:
       python:
         repository: bblfsh/python-driver
-        tag: v2.4.0
+        tag: v2.7.0
       cpp:
         repository: bblfsh/cpp-driver
-        tag: v0.3.0
+        tag: v1.1.0
       java:
         repository: bblfsh/java-driver
-        tag: v2.3.0
+        tag: v2.5.0
       php:
         repository: bblfsh/php-driver
-        tag: v2.4.0
+        tag: v2.7.0
       ruby:
         repository: bblfsh/ruby-driver
-        tag: v2.4.0
+        tag: v2.8.0
       javascript:
         repository: bblfsh/javascript-driver
-        tag: v2.3.0
+        tag: v2.6.0
       bash:
         repository: bblfsh/bash-driver
-        tag: v2.1.0
+        tag: v2.4.0
       go:
         repository: bblfsh/go-driver
-        tag: v2.3.0
+        tag: v2.5.0
+      csharp:
+        repository: bblfsh/csharp-driver
+        tag: v1.2.0
 
 gitbaseServer:
   # commit defaults to HEAD unless given