Updated telegraf to 1.26.0 to fix CVE-2022-23471

[PawelWMS]

Merge Checklist

All boxes should be checked before merging the PR (just tick any boxes which don't apply to this PR)

• The toolchain has been rebuilt successfully (or no changes were made to it)
• The toolchain/worker package manifests are up-to-date
• Any updated packages successfully build (or no packages were changed)
• Packages depending on static components modified in this PR (Golang, *-static subpackages, etc.) have had their Release tag incremented.
• Package tests (%check section) have been verified with RUN_CHECK=y for existing SPEC files, or added to new SPEC files
• All package sources are available
• cgmanifest files are up-to-date and sorted (./cgmanifest.json, ./toolkit/tools/cgmanifest.json, ./toolkit/scripts/toolchain/cgmanifest.json)
• LICENSE-MAP files are up-to-date (./SPECS/LICENSES-AND-NOTICES/data/licenses.json, ./SPECS/LICENSES-AND-NOTICES/LICENSES-MAP.md, ./SPECS/LICENSES-AND-NOTICES/LICENSE-EXCEPTIONS.PHOTON)
• All source files have up-to-date hashes in the *.signatures.json files
• sudo make go-tidy-all and sudo make go-test-coverage pass
• Documentation has been updated to match any changes to the build system
• Ready to merge

---

Summary

Updating telegraf to fix a CVE in its vendored sources for containerd.

Change Log

• Updated telegraf to version 1.26.0.
• Added the generate_source_tarball.sh script to enable auto-upgrades.

Does this affect the toolchain?

No.

Associated issues

• chore(deps): Bump github.com/containerd/containerd from 1.6.8 to 1.6.18 influxdata/telegraf#12693

Links to CVEs

• https://nvd.nist.gov/vuln/detail/CVE-2022-23471

Test Methodology

• Local package build.