Update dependency ruff to v0.15.20

[renovate]

This PR contains the following updates:

Package	Change	Age	Confidence
ruff (source, changelog)	0.15.19 → 0.15.20

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Release Notes

astral-sh/ruff (ruff)

v0.15.20

Compare Source

Released on 2026-06-25.

Preview features

• Allow human-readable names in rule selectors (#​25887)
• Emit a warning instead of an error for unknown rule selectors (#​26113)
• Match noqa shebang handling in ruff:ignore comments (#​26286)
• [ruff] Remove pytest-fixture-autouse (RUF076) (#​26240, #​26371)

Documentation

• Add versioning sections to custom crate READMEs (#​26317)
• Update ruff_python_parser README for crates.io (#​26315)
• [perflint] Clarify that PERF402 applies to any iterable (#​26242)

Contributors

• @​dhruvmanila
• @​MichaReiser
• @​ntBre
• @​trilamsr

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[github-actions]

Trivy Security Scan

cnb/lifecycle/launcher

Severity	Package	Installed	Fixed	CVE	Title
🟠 HIGH	stdlib	v1.26.2	1.25.11, 1.26.4	CVE-2026-27145	*x509.Certificate).VerifyHostname previously called matchHostnames in ...
🟠 HIGH	stdlib	v1.26.2	1.25.10, 1.26.3	CVE-2026-33811	net: golang: Go net package: Denial of Service via long CNAME response in LookupCNAME
🟠 HIGH	stdlib	v1.26.2	1.25.10, 1.26.3	CVE-2026-33814	net/http/internal/http2: golang: golang.org/x/net: Go HTTP/2: Denial of Service via malformed SETTINGS_MAX_FRAME_SIZE frame
🟠 HIGH	stdlib	v1.26.2	1.25.10, 1.26.3	CVE-2026-39820	Well-crafted inputs reaching ParseAddress, ParseAddressList, and Parse ...
🟠 HIGH	stdlib	v1.26.2	1.25.10, 1.26.3	CVE-2026-39823	CVE-2026-27142 fixed a vulnerability in which URLs were not correctly ...
🟠 HIGH	stdlib	v1.26.2	1.25.10, 1.26.3	CVE-2026-39836	ELSA-2026-22121: golang security update (IMPORTANT)
🟠 HIGH	stdlib	v1.26.2	1.25.10, 1.26.3	CVE-2026-42499	Pathological inputs could cause DoS through consumePhrase when parsing ...
🟠 HIGH	stdlib	v1.26.2	1.25.11, 1.26.4	CVE-2026-42504	Decoding a maliciously-crafted MIME header containing many invalid enc ...

layers/sbom/launch/buildpacksio_lifecycle/launcher/sbom.cdx.json

Severity	Package	Installed	Fixed	CVE	Title
🟠 HIGH	stdlib	1.26.2	1.25.11, 1.26.4	CVE-2026-27145	*x509.Certificate).VerifyHostname previously called matchHostnames in ...
🟠 HIGH	stdlib	1.26.2	1.25.10, 1.26.3	CVE-2026-33811	net: golang: Go net package: Denial of Service via long CNAME response in LookupCNAME
🟠 HIGH	stdlib	1.26.2	1.25.10, 1.26.3	CVE-2026-33814	net/http/internal/http2: golang: golang.org/x/net: Go HTTP/2: Denial of Service via malformed SETTINGS_MAX_FRAME_SIZE frame
🟠 HIGH	stdlib	1.26.2	1.25.10, 1.26.3	CVE-2026-39820	Well-crafted inputs reaching ParseAddress, ParseAddressList, and Parse ...
🟠 HIGH	stdlib	1.26.2	1.25.10, 1.26.3	CVE-2026-39823	CVE-2026-27142 fixed a vulnerability in which URLs were not correctly ...
🟠 HIGH	stdlib	1.26.2	1.25.10, 1.26.3	CVE-2026-39836	ELSA-2026-22121: golang security update (IMPORTANT)
🟠 HIGH	stdlib	1.26.2	1.25.10, 1.26.3	CVE-2026-42499	Pathological inputs could cause DoS through consumePhrase when parsing ...
🟠 HIGH	stdlib	1.26.2	1.25.11, 1.26.4	CVE-2026-42504	Decoding a maliciously-crafted MIME header containing many invalid enc ...

layers/sbom/launch/buildpacksio_lifecycle/launcher/sbom.spdx.json

Severity	Package	Installed	Fixed	CVE	Title
🟠 HIGH	stdlib	1.26.2	1.25.11, 1.26.4	CVE-2026-27145	*x509.Certificate).VerifyHostname previously called matchHostnames in ...
🟠 HIGH	stdlib	1.26.2	1.25.10, 1.26.3	CVE-2026-33811	net: golang: Go net package: Denial of Service via long CNAME response in LookupCNAME
🟠 HIGH	stdlib	1.26.2	1.25.10, 1.26.3	CVE-2026-33814	net/http/internal/http2: golang: golang.org/x/net: Go HTTP/2: Denial of Service via malformed SETTINGS_MAX_FRAME_SIZE frame
🟠 HIGH	stdlib	1.26.2	1.25.10, 1.26.3	CVE-2026-39820	Well-crafted inputs reaching ParseAddress, ParseAddressList, and Parse ...
🟠 HIGH	stdlib	1.26.2	1.25.10, 1.26.3	CVE-2026-39823	CVE-2026-27142 fixed a vulnerability in which URLs were not correctly ...
🟠 HIGH	stdlib	1.26.2	1.25.10, 1.26.3	CVE-2026-39836	ELSA-2026-22121: golang security update (IMPORTANT)
🟠 HIGH	stdlib	1.26.2	1.25.10, 1.26.3	CVE-2026-42499	Pathological inputs could cause DoS through consumePhrase when parsing ...
🟠 HIGH	stdlib	1.26.2	1.25.11, 1.26.4	CVE-2026-42504	Decoding a maliciously-crafted MIME header containing many invalid enc ...