libpfm: 4.8.0 -> 4.9.0
libpfm: 4.8.0 -> 4.9.0

Semi-automatic update. These checks were performed:

- built on NixOS
- found 4.9.0 in filename of file in /nix/store/3nyn4vl383r9m140mvphm8dvsyhn8pj0-libpfm-4.9.0

cc "@pierron"

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