Add Sidekiq 7.0 middleware modules

Sidekiq 7.0 requires middlewares to add new modules. These modules are
not currently in use by our code, but I'm adding them for good measure.

instrumentation/sidekiq/lib/opentelemetry/instrumentation/sidekiq/middlewares/client/tracer_middleware.rb

@@ -12,6 +12,8 @@ module Client
           # TracerMiddleware propagates context and instruments Sidekiq client
           # by way of its middleware system
           class TracerMiddleware
+            include ::Sidekiq::ClientMiddleware if defined?(::Sidekiq::ClientMiddleware)
+
             def call(_worker_class, job, _queue, _redis_pool)
               attributes = {
                 SemanticConventions::Trace::MESSAGING_SYSTEM => 'sidekiq',

instrumentation/sidekiq/lib/opentelemetry/instrumentation/sidekiq/middlewares/server/tracer_middleware.rb

@@ -12,6 +12,8 @@ module Server
           # TracerMiddleware propagates context and instruments Sidekiq requests
           # by way of its middleware system
           class TracerMiddleware
+            include ::Sidekiq::ServerMiddleware if defined?(::Sidekiq::ServerMiddleware)
+
             def call(_worker, msg, _queue) # rubocop:disable Metrics/CyclomaticComplexity, Metrics/MethodLength, Metrics/PerceivedComplexity
               attributes = {
                 SemanticConventions::Trace::MESSAGING_SYSTEM => 'sidekiq',