bump nim-eth to `d8fda55c79dd48ba564f3cb540b968f4a1c1aae6`

[etan-status]

• Overhaul of ENR implementation - part I
• Rework of ENR decoding code
• Update discv5 to use non deprecated ENR calls and simplify code
• simplify .nimble file
• avoid warnings when processing GasInt for RLP
• define Electra types and RLP encoding

[github-actions[bot]]

Unit Test Results

         9 files  ±0    1 334 suites  ±0   29m 47s :stopwatch: + 1m 48s   4 999 tests ±0    4 651 :heavy_check_mark: ±0  348 :zzz: ±0  0 :x: ±0  20 877 runs  ±0  20 473 :heavy_check_mark: ±0  404 :zzz: ±0  0 :x: ±0 

Results for commit b38358ec. ± Comparison against base commit 85c28509.

:recycle: This comment has been updated with latest results.