chore: add .git-blame-ignore-revs for fmt commit #28

Job	Run time
ci / Compile	23s
ci / Format	21s
ci / Dialyzer	29s
ci / Xref	18s
ci / Documentation	18s
ci / Common Test (OTP 28.0)	1m 48s
ci / Common Test${{ ((matrix.otp && format(' (OTP {0})', matrix.otp)) \|\| '') }}	-1s
ci / EUnit${{ ((matrix.otp && format(' (OTP {0})', matrix.otp)) \|\| '') }}	-1s
ci / EUnit${{ ((matrix.otp && format(' (OTP {0})', matrix.otp)) \|\| '') }}	-1s
ci / Audit	-1s
	3m 33s

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