Update release notes for 11.7

Author: spencertransier

WooCommerce/Resources/release_notes.txt

@@ -1,5 +1 @@
-- [**] Analytics Hub: Now you can select custom date ranges. [https://github.com/woocommerce/woocommerce-ios/pull/8414]
-- [**] Analytics Hub: Now you can see Views and Conversion Rate analytics in the new Sessions card. [https://github.com/woocommerce/woocommerce-ios/pull/8428]
-- [*] My Store: We fixed an issue with Visitors and Conversion stats where sometimes visitors could be counted more than once in the selected period. [https://github.com/woocommerce/woocommerce-ios/pull/8427]
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+Did you know we've added a new analytics section? It's now possible to select custom date ranges when viewing your stats! Simply click on the See More button under the store stats to check it out.