Upgrade StackExchange.Redis.StrongName to version 1.2.3 (#231)

- Addresses package downgrade warnings (https://github.com/aspnet/DataProtection/issues/227)

.travis.yml

@@ -16,6 +16,7 @@ branches:
     - release
     - dev
     - /^(.*\/)?ci-.*$/
+    - /^rel\/.*/
 before_install:
   - if test "$TRAVIS_OS_NAME" == "osx"; then brew update; brew install openssl; ln -s /usr/local/opt/openssl/lib/libcrypto.1.0.0.dylib /usr/local/lib/; ln -s /usr/local/opt/openssl/lib/libssl.1.0.0.dylib /usr/local/lib/; fi
 script:

appveyor.yml

@@ -6,6 +6,7 @@ branches:
     - release
     - dev
     - /^(.*\/)?ci-.*$/
+    - /^rel\/.*/
 build_script:
   - ps: .\build.ps1
 clone_depth: 1

build/dependencies.props

@@ -5,7 +5,7 @@
     <InternalAspNetCoreSdkVersion>2.1.0-*</InternalAspNetCoreSdkVersion>
     <MoqVersion>4.7.1</MoqVersion>
     <NETStandardImplicitPackageVersion>$(BundledNETStandardPackageVersion)</NETStandardImplicitPackageVersion>
-    <RedisVersion>1.1.605</RedisVersion>
+    <RedisVersion>1.2.3</RedisVersion>
     <TestSdkVersion>15.0.0</TestSdkVersion>
     <XunitVersion>2.2.0</XunitVersion>
     <WindowsAzureStorageVersion>8.1.1</WindowsAzureStorageVersion>