PROGRAMMES-7186 Orbit client with resilience (#24)

- Update orbit and branding to use the resilience layer (PROGRAMMES-7186, PROGRAMMES-7185)
- Update codesniffer and phpunit to work with php 7.3 and fix some unitest deprecations

composer.json

@@ -9,16 +9,23 @@
     "autoload-dev": {
         "psr-4": { "Tests\\BBC\\BrandingClient\\": "tests/" }
     },
+    "repositories": [
+        {
+            "type": "vcs",
+            "url": "git@github.com:bbc/programmes-caching-library.git"
+        }
+    ],
     "require": {
+        "bbc/programmes-caching-library":  "^1.1.5",
         "php": ">=7.1.0",
         "guzzlehttp/guzzle": "^6.0",
         "mustache/mustache": "~2.5",
         "psr/cache": "^1.0"
     },
     "require-dev": {
         "phpstan/phpstan": "^0.8.0",
-        "phpunit/phpunit": "^6.1",
-        "squizlabs/php_codesniffer": "^2.9",
+        "phpunit/phpunit": "^8.4.3",
+        "squizlabs/php_codesniffer": "^3.5.2",
         "symfony/cache": "^3.2"
     },
     "config": {