fix: logging started getting pretty noisy

[luhring]

For multiple reasons, the log output shown to users by default started creeping up over time. This PR gets the default logging back to a healthy minimum (while still configurable to any crazy amount, of course!).

• Logging for at least some commands used to default to WARN level. We recently cleaned up logging, but according to git bisect, commit d2196cd changed commands like "scan" to log at INFO by default, which is noisier than intended for the commands. This change sets the default logging level to WARN while preserving the ability to set it to INFO or higher if desired.
• Updated apko to latest on main (v0.23.1-0.20250125200830-0b6b8a0543aa) to pick up logging noise improvements from fix(apk/client): silence request logging chainguard-dev/apko#1497.

Before

$ go run . scan -r crane
📡 Finding remote packages
2025/01/25 15:21:31 [DEBUG] GET https://packages.wolfi.dev/os/x86_64/APKINDEX.tar.gz
2025/01/25 15:21:31 [DEBUG] GET https://packages.wolfi.dev/os/aarch64/APKINDEX.tar.gz
2025/01/25 15:21:31 [DEBUG] GET https://apk.cgr.dev/chainguard-private/x86_64/APKINDEX.tar.gz
2025/01/25 15:21:31 [DEBUG] GET https://apk.cgr.dev/chainguard-private/aarch64/APKINDEX.tar.gz
2025/01/25 15:21:31 [DEBUG] GET https://apk.cgr.dev/extra-packages/aarch64/APKINDEX.tar.gz
2025/01/25 15:21:31 [DEBUG] GET https://apk.cgr.dev/extra-packages/x86_64/APKINDEX.tar.gz
2025/01/25 15:21:34 INFO downloaded APK path=/var/folders/pz/h07rtjmd4mv4wpnr5st5q1480000gn/T/packages.wolfi.dev-os-aarch64-crane-0.20.3-r1.apk1815856246
2025/01/25 15:21:34 INFO downloaded APK path=/var/folders/pz/h07rtjmd4mv4wpnr5st5q1480000gn/T/packages.wolfi.dev-os-x86_64-crane-0.20.3-r1.apk771089764
2025/01/25 15:21:34 INFO generating SBOM for APK file path=/var/folders/pz/h07rtjmd4mv4wpnr5st5q1480000gn/T/packages.wolfi.dev-os-x86_64-crane-0.20.3-r1.apk771089764 distroID=wolfi
2025/01/25 15:21:34 INFO generating SBOM for APK file path=/var/folders/pz/h07rtjmd4mv4wpnr5st5q1480000gn/T/packages.wolfi.dev-os-aarch64-crane-0.20.3-r1.apk1815856246 distroID=wolfi
2025/01/25 15:21:35 INFO finished Syft SBOM generation packageCount=19
2025/01/25 15:21:35 INFO finished Syft SBOM generation packageCount=19
🔎 Scanning "/var/folders/pz/h07rtjmd4mv4wpnr5st5q1480000gn/T/packages.wolfi.dev-os-aarch64-crane-0.20.3-r1.apk1815856246"
2025/01/25 15:21:35 INFO converted packages to grype packages packageCount=19
✅ No vulnerabilities found
🔎 Scanning "/var/folders/pz/h07rtjmd4mv4wpnr5st5q1480000gn/T/packages.wolfi.dev-os-x86_64-crane-0.20.3-r1.apk771089764"
2025/01/25 15:21:35 INFO converted packages to grype packages packageCount=19
✅ No vulnerabilities found

Now

$ go run . scan -r crane            
📡 Finding remote packages
🔎 Scanning "/var/folders/pz/h07rtjmd4mv4wpnr5st5q1480000gn/T/packages.wolfi.dev-os-x86_64-crane-0.20.3-r1.apk300702529"
✅ No vulnerabilities found
🔎 Scanning "/var/folders/pz/h07rtjmd4mv4wpnr5st5q1480000gn/T/packages.wolfi.dev-os-aarch64-crane-0.20.3-r1.apk2082852862"
✅ No vulnerabilities found