Bump wat from 1.222.0 to 1.225.0 in /native/wasmex (#718) #78

Job	Run time
NIF 2.15 - aarch64-unknown-linux-gnu (ubuntu-20.04)	2m 39s
NIF 2.15 - aarch64-unknown-linux-musl (ubuntu-20.04)	2m 32s
NIF 2.15 - aarch64-apple-darwin (macos-15)	2m 27s
NIF 2.15 - x86_64-apple-darwin (macos-15)	1m 52s
NIF 2.15 - x86_64-unknown-linux-gnu (ubuntu-20.04)	1m 43s
NIF 2.15 - x86_64-unknown-linux-musl (ubuntu-20.04)	2m 18s
NIF 2.15 - riscv64gc-unknown-linux-gnu (ubuntu-20.04)	2m 15s
NIF 2.15 - x86_64-pc-windows-gnu (windows-2022)	5m 43s
NIF 2.15 - x86_64-pc-windows-msvc (windows-2022)	5m 12s
NIF 2.15 - x86_64-unknown-freebsd (ubuntu-22.04)	2m 16s
	28m 57s

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