fix(kernel_crawler): fixed rpi debian kernel kernelrelease.

[FedeDP]

What type of PR is this?

/kind bug

Any specific area of the project related to this PR?

/area crawler

What this PR does / why we need it:

Avoid 1: at start of kernelrelease for rpi kernels.

Previoius output:

{
  "debian": [
    {
      "kernelversion": "1",
      "kernelrelease": "1:6.1.21-1+rpt1-rpi-arm64",
      "target": "debian",
      "headers": [
        "http://archive.raspberrypi.com/debian/pool/main/l/linux/linux-kbuild-6.1_6.1.63-1+rpt1_arm64.deb",
        "http://archive.raspberrypi.com/debian/pool/main/l/linux/linux-headers-6.1.0-rpi1-rpi-v8_6.1.21-1+rpt1_arm64.deb",
        "http://archive.raspberrypi.com/debian/pool/main/l/linux/linux-headers-6.1.0-rpi1-common-rpi_6.1.21-1+rpt1_all.deb"
      ]
    },

New output:

{
  "debian": [
    {
      "kernelversion": "1",
      "kernelrelease": "6.1.21-1+rpt1-rpi-arm64",
      "target": "debian",
      "headers": [
        "http://archive.raspberrypi.com/debian/pool/main/l/linux/linux-kbuild-6.1_6.1.63-1+rpt1_arm64.deb",
        "http://archive.raspberrypi.com/debian/pool/main/l/linux/linux-headers-6.1.0-rpi1-common-rpi_6.1.21-1+rpt1_all.deb",
        "http://archive.raspberrypi.com/debian/pool/main/l/linux/linux-headers-6.1.0-rpi1-rpi-v8_6.1.21-1+rpt1_arm64.deb"
      ]
    },
  

Didn't notice the issue at first glance friday afternoon :)

Which issue(s) this PR fixes:

Fixes #

Special notes for your reviewer:

[FedeDP]

/cc @leogr