Update BTCPay Server to v1.6.12 (#234)

Co-authored-by: Steven Briscoe <me@stevenbriscoe.com>

btcpay-server/docker-compose.yml

@@ -8,7 +8,7 @@ services:
       PROXY_AUTH_ADD: "false"
 
   nbxplorer:
-    image: nicolasdorier/nbxplorer:2.3.33@sha256:70741f1ecf96de31a4606e0a453d8a25caf5bd8aaf8d345f20740c837f04e6fb
+    image: nicolasdorier/nbxplorer:2.3.42@sha256:c6b255498b1bad64cdf874459edd163c6a84f9b39118ecc4ad0816900f7647d4
     user: "1000:1000"
     restart: on-failure
     stop_grace_period: 1m
@@ -33,7 +33,7 @@ services:
         ipv4_address: $APP_BTCPAY_SERVER_NBXPLORER_IP
 
   web:
-    image: btcpayserver/btcpayserver:1.6.3@sha256:fb514c417933fc088dec2fb841f5d3572e35429412e79bb12b25fb4437519162
+    image: btcpayserver/btcpayserver:1.6.12@sha256:41768be32374ebc4f64050ad5e56ffef8834ccacbff0440c0938a493abcec252
     user: "1000:1000"
     restart: on-failure
     stop_grace_period: 1m

btcpay-server/umbrel-app.yml

@@ -2,7 +2,7 @@ manifestVersion: 1
 id: btcpay-server
 category: Finance
 name: BTCPay Server
-version: "1.6.3"
+version: "1.6.12"
 tagline: Accept Bitcoin payments with 0 fees & no 3rd party
 description: >-
   BTCPay Server is a payment processor that allows you to receive
@@ -33,19 +33,24 @@ gallery:
 path: ""
 defaultUsername: ""
 defaultPassword: ""
-releaseNotes: >-
-  1.6.3 is out!
+releaseNotes: >
+  1.6.12 is out!
 
-  - Lightning dashboard ⚡️
-  - Invoice receipts
 
-  Plugins:
-  - NFC Support Plugin
-  - Ticket Tailor plugin to sell tickets
-  - LNBank updates
+  - Improve LNDHub support
 
-  More details: https://twitter.com/BtcpayServer/status/1545444707169636353
+  - Edit Pull Payment UI
 
-  Other included updates (1.6.1-1.6.3): Minor improvements and bug fixes and ability to add a discount in the point of sale keypad!
+  - Custodian Account Deposit UI
+
+  - Add Yadio rate provider
+
+  - Add support for updating POS app through Greenfield API 
+
+  - Allow specifing fee block target for onchain payout processor
+
+  - Greenfield: Extend LN GetInfo data
+  
+  - Bug fixes and improvements, too.
 submitter: Umbrel
-submission: https://github.com/getumbrel/umbrel/pull/353
+submission: https://github.com/getumbrel/umbrel/pull/353