src: update checkpoints to match v0.18.5.3

### README.md
@@ -121,8 +121,8 @@ Dates are provided in the format YYYY-MM-DD. The "Minimum" is the software versi
 | 1978433                        | 2019-11-30 | v12               | v0.15.0.0              | v0.16.0.0                  | New PoW based on RandomX, only allow >= 2 outputs, change to the block median used to calculate penalty, v1 coinbases are forbidden, rct sigs in coinbase forbidden, 10 block lock time for incoming outputs
 | 2210000                        | 2020-10-17 | v13               | v0.17.0.0              | v0.17.3.2                  | New CLSAG transaction format
 | 2210720                        | 2020-10-18 | v14               | v0.17.1.1              | v0.17.3.2                  | forbid old MLSAG transaction format
-| 2688888                        | 2022-08-13 | v15               | v0.18.0.0              | v0.18.5.1                  | ringsize = 16, bulletproofs+, view tags, adjusted dynamic block weight algorithm
-| 2689608                        | 2022-08-14 | v16               | v0.18.0.0              | v0.18.5.1                  | forbid old v14 transaction format
+| 2688888                        | 2022-08-13 | v15               | v0.18.0.0              | v0.18.5.3                  | ringsize = 16, bulletproofs+, view tags, adjusted dynamic block weight algorithm
+| 2689608                        | 2022-08-14 | v16               | v0.18.0.0              | v0.18.5.3                  | forbid old v14 transaction format
 | XXXXXXX                        | XXX-XX-XX | XXX                | vX.XX.X.X              | vX.XX.X.X                  | XXX |
 
 X's indicate that these details have not been determined as of commit date.
@@ -283,7 +283,7 @@ Tested on a Raspberry Pi 5B with a clean installation of Raspberry Pi OS (64-bit
     ```bash
     git clone --recursive https://github.com/monero-project/monero.git
     cd monero
-    git checkout v0.18.5.1
+    git checkout v0.18.5.3
     ```
 
 * Build:
@@ -342,10 +342,10 @@ Binaries for Windows can be built on Windows using the MinGW toolchain within [M
     cd monero
     ```
 
-* If you would like a specific [version/tag](https://github.com/monero-project/monero/tags), do a git checkout for that version. eg. 'v0.18.5.1'. If you don't care about the version and just want binaries from master, skip this step:
+* If you would like a specific [version/tag](https://github.com/monero-project/monero/tags), do a git checkout for that version. eg. 'v0.18.5.3'. If you don't care about the version and just want binaries from master, skip this step:
 
     ```bash
-    git checkout v0.18.5.1
+    git checkout v0.18.5.3
     ```
 
 * To build Monero, run:

### src/blocks/checkpoints.dat
[binary or diff unavailable]

### src/checkpoints/checkpoints.cpp
@@ -271,7 +271,7 @@ namespace cryptonote
     ADD_CHECKPOINT2(3541000, "74c457bed9ceef40f31f43bb8fab804077519d45c910dcad2acf4dd8556195c7", "0x76ff158c682d218");
     ADD_CHECKPOINT2(3576000, "5da4891bfd06be270193bd949f2a623a2b0cb0ebfaad21c70a6cb18e418e5b6a", "0x7cb2e203e867b57");
     ADD_CHECKPOINT2(3661900, "ac392757a92123f68d63cd72f0d1410f63df1102a53b5d39fc4d53d0998b20a3", "0x8a38f2195826a97");
-    ADD_CHECKPOINT2(3707000, "9c508fe29120b5cd204f9d150e68fd2e4015d8d859bc0431f7016c7aabc711c9", "0x91129586d4979a6");
+    ADD_CHECKPOINT2(3774800, "0f4c4c1ca33c35dc56cb764a94e96467df281299e9e5264a5d905309cb806488", "0x9bb1dcfc99f355c");
     return true;
   }
 

### src/cryptonote_core/blockchain.cpp
@@ -5422,7 +5422,7 @@ void Blockchain::cancel()
 }
 
 #if defined(PER_BLOCK_CHECKPOINT)
-static const char expected_block_hashes_hash[] = "2aea941d43024422a63f223c84b9d88d1f58d31e1f508c2d6d43cd637ba32d16";
+static const char expected_block_hashes_hash[] = "4871b67b077087affd07094be0f70bfd0d4e4105df126646e0a7524fe02b1d5d";
 void Blockchain::load_compiled_in_block_hashes(const GetCheckpointsCallback& get_checkpoints)
 {
   if (get_checkpoints == nullptr || !m_fast_sync)