skipper-internal: Update to version v0.21.280-1102

[k8s-on-aws-manager-app]

• net: use strings.LastIndex to parse header zalando/skipper#3404
• build: update min go version to 1.23 zalando/skipper#3406
• Refactor: Improve OPA authorization filter benchmarks zalando/skipper#3391
• filters/auth: tokeninfo cache comment zalando/skipper#3408
• predicates/forwarded: use strings.Index to parse header zalando/skipper#3405
• build(deps): bump amazonlinux from 8217eec to 0377b0a in /fuzz zalando/skipper#3411
• build(deps): bump oss-fuzz-base/base-builder-go from 7031d0f to 98616f3 in /.clusterfuzzlite zalando/skipper#3410
• build(deps): bump alpine from 56fa17d to a8560b3 in /packaging zalando/skipper#3412
• build(deps): bump the all-go-mod-patch-and-minor group across 1 directory with 8 updates zalando/skipper#3409
• build(deps): bump oss-fuzz-base/base-builder-go from 98616f3 to d354bdf in /.clusterfuzzlite zalando/skipper#3413
• build(deps): bump ossf/scorecard-action from 2.4.0 to 2.4.1 zalando/skipper#3415
• build(deps): bump actions/cache from 4.2.0 to 4.2.1 zalando/skipper#3416
• build(deps): bump the all-go-mod-patch-and-minor group with 4 updates zalando/skipper#3414