book: bump min node version, pre-release version

Author: johnalotoski

docs/environments/mainnet/config-bp.json

@@ -10,7 +10,7 @@
   "LastKnownBlockVersion-Major": 3,
   "LastKnownBlockVersion-Minor": 0,
   "MaxKnownMajorProtocolVersion": 2,
-  "MinNodeVersion": "8.12.0",
+  "MinNodeVersion": "10.1.4",
   "PeerSharing": false,
   "Protocol": "Cardano",
   "RequiresNetworkMagic": "RequiresNoMagic",

docs/environments/mainnet/config.json

@@ -10,7 +10,7 @@
   "LastKnownBlockVersion-Major": 3,
   "LastKnownBlockVersion-Minor": 0,
   "MaxKnownMajorProtocolVersion": 2,
-  "MinNodeVersion": "8.12.0",
+  "MinNodeVersion": "10.1.4",
   "PeerSharing": true,
   "Protocol": "Cardano",
   "RequiresNetworkMagic": "RequiresNoMagic",

docs/environments/preprod/config-bp.json

@@ -9,7 +9,7 @@
   "LastKnownBlockVersion-Alt": 0,
   "LastKnownBlockVersion-Major": 2,
   "LastKnownBlockVersion-Minor": 0,
-  "MinNodeVersion": "8.12.0",
+  "MinNodeVersion": "10.1.4",
   "PeerSharing": false,
   "Protocol": "Cardano",
   "RequiresNetworkMagic": "RequiresMagic",

docs/environments/preprod/config.json

@@ -9,7 +9,7 @@
   "LastKnownBlockVersion-Alt": 0,
   "LastKnownBlockVersion-Major": 2,
   "LastKnownBlockVersion-Minor": 0,
-  "MinNodeVersion": "8.12.0",
+  "MinNodeVersion": "10.1.4",
   "PeerSharing": true,
   "Protocol": "Cardano",
   "RequiresNetworkMagic": "RequiresMagic",

docs/environments/preview/config-bp.json

@@ -11,7 +11,7 @@
   "LastKnownBlockVersion-Alt": 0,
   "LastKnownBlockVersion-Major": 3,
   "LastKnownBlockVersion-Minor": 1,
-  "MinNodeVersion": "8.12.0",
+  "MinNodeVersion": "10.1.4",
   "PeerSharing": false,
   "Protocol": "Cardano",
   "RequiresNetworkMagic": "RequiresMagic",

docs/environments/preview/config.json

@@ -11,7 +11,7 @@
   "LastKnownBlockVersion-Alt": 0,
   "LastKnownBlockVersion-Major": 3,
   "LastKnownBlockVersion-Minor": 1,
-  "MinNodeVersion": "8.12.0",
+  "MinNodeVersion": "10.1.4",
   "PeerSharing": true,
   "Protocol": "Cardano",
   "RequiresNetworkMagic": "RequiresMagic",

flake.lock

@@ -1,12 +1,13 @@
 ## Advanced Configuration: Pre-Production Testnet
 
-There is currently no pre-release version available for the pre-production environment.
+Users wanting to test a cardano-node pre-release version on the preprod
+environment may obtain compatible configuration files below.
 
-The latest version available is cardano-node release `10.1.4`.
+The latest version available is cardano-node pre-release `10.2.1`.
 
 #### Configuration files
 
-Compatible with cardano-node release [10.1.4](https://github.com/IntersectMBO/cardano-node/releases/tag/10.1.4)
+Compatible with cardano-node pre-release [10.2.1](https://github.com/IntersectMBO/cardano-node/releases/tag/10.2.1)
 
 ```
 NOTE:

mdbook/adv-preprod.md

@@ -1,12 +1,13 @@
 ## Advanced Configuration: Preview Testnet
 
-There is currently no pre-release version available for the preview environment.
+Users wanting to test a cardano-node pre-release version on the preview
+environment may obtain compatible configuration files below.
 
-The latest version available is cardano-node release `10.1.4`.
+The latest version available is cardano-node pre-release `10.2.1`.
 
 #### Configuration files
 
-Compatible with cardano-node release [10.1.4](https://github.com/IntersectMBO/cardano-node/releases/tag/10.1.4)
+Compatible with cardano-node pre-release [10.2.1](https://github.com/IntersectMBO/cardano-node/releases/tag/10.2.1)
 
 ```
 NOTE: