feat: update genesis blocks (tari-project#5698)

Description
---
Updated esmeralda and igor genesis block time stamps

Motivation and Context
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Needed to conduct a new series of development testing

How Has This Been Tested?
---
Updated `detect_change_in_consensus_encoding`
All tests pass

What process can a PR reviewer use to test or verify this change?
---
Code walktrhough

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Breaking Changes
---

- [x] None
- [ ] Requires data directory on base node to be deleted
- [ ] Requires hard fork
- [ ] Other - Please specify

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Co-authored-by: SW van Heerden <[email protected]>

base_layer/core/src/blocks/genesis_block.rs

@@ -250,7 +250,7 @@ pub fn get_igor_genesis_block() -> ChainBlock {
 
 fn get_igor_genesis_block_raw() -> Block {
     // Set genesis timestamp
-    let genesis_timestamp = DateTime::parse_from_rfc2822("11 Aug 2023 15:30:00 +0200").expect("parse may not fail");
+    let genesis_timestamp = DateTime::parse_from_rfc2822("31 Aug 2023 08:00:00 +0200").expect("parse may not fail");
     // Let us add a "not before" proof to the genesis block
     let not_before_proof = b"but igor is the best, it is whispered in the wind \
         \
@@ -304,7 +304,7 @@ pub fn get_esmeralda_genesis_block() -> ChainBlock {
 
 fn get_esmeralda_genesis_block_raw() -> Block {
     // Set genesis timestamp
-    let genesis_timestamp = DateTime::parse_from_rfc2822("11 Aug 2023 15:40:00 +0200").expect("parse may not fail");
+    let genesis_timestamp = DateTime::parse_from_rfc2822("31 Aug 2023 08:01:00 +0200").expect("parse may not fail");
     // Let us add a "not before" proof to the genesis block
     let not_before_proof =
         b"as I sip my drink, thoughts of esmeralda consume my mind, like a refreshing nourishing draught \

base_layer/tari_mining_helper_ffi/src/lib.rs

@@ -386,8 +386,8 @@ mod tests {
 
     #[test]
     fn detect_change_in_consensus_encoding() {
-        const NONCE: u64 = 10923100584592193928;
-        let difficulty = Difficulty::from_u64(8251).expect("Failed to create difficulty");
+        const NONCE: u64 = 4038183075833317878;
+        let difficulty = Difficulty::from_u64(1197).expect("Failed to create difficulty");
         unsafe {
             let mut error = -1;
             let error_ptr = &mut error as *mut c_int;