add charliecloud 0.9.6 (#10176)

var/spack/repos/builtin/packages/charliecloud/package.py

@@ -12,6 +12,7 @@ class Charliecloud(MakefilePackage):
     homepage = "https://hpc.github.io/charliecloud"
     url      = "https://github.com/hpc/charliecloud/archive/v0.2.4.tar.gz"
 
+    version('0.9.6', sha256='50e20d5e2a3710cd06e7c999db22495b07ef0fb15ffbc0af3bccac5387f0fddb')
     version('0.9.3', sha256='f1bf032377b8845bc9a93b8a4fad6386161e35900223c0acc61d1f3aa3a87bc7')
     version('0.9.2', sha256='8d0e4804d412beef720a66f886a0a78bce42f3269e880ebf11f602581f8047d4')
     version('0.9.1', sha256='8e69150a271285da71ece7a09b48251ef6593f72207c5126741d9976aa737d95')