Update sql_exporter to 0.20.0

[github-actions]

Update sql_exporter to 0.20.0.

SQL Exporter v0.20.0

⚠️ BREAKING CHANGES

• The aws_secret_name field has been removed and related legacy code has been replaced with the new mechanism.

What's Changed

This release adds following features and improvements:

• Secrets can now be referenced directly in the data_source_name field using the new URL syntax. Supported providers include AWS Secrets Manager, GCP Secret Manager and Hashicorp Vault. This change applies to both single and multi-target configurations;
• Support for custom TLS configuration for MySQL connections, allowing users to specify client and CA certificates via DSN parameters;
• Warmup delay mechanism (warmup_delay) aimed at preventing the thundering herd problem during startup by staggering collector queries. It's used alongside the min_interval parameter to populate the cache;
• Improved job filter handling to only include scrape_errors_total metrics for jobs specified in the job filters.

Further details are available in the README, and also in the example configuration here.

Precompiled binaries are built with Go v1.25.8

---

• feat: add TLS config for MySQL driver by @burningalchemist in feat: add TLS config for MySQL driver burningalchemist/sql_exporter#907
• feat: resolve cloud secret manager refs for connection strings by @burningalchemist in feat: resolve cloud secret manager refs for connection strings burningalchemist/sql_exporter#918
• feat: add warmup delayed cache population at startup by @burningalchemist in feat: add warmup delayed cache population at startup burningalchemist/sql_exporter#919
• fix: export scrape_errors_total for related job filters by @burningalchemist in fix: export scrape_errors_total for related job filters burningalchemist/sql_exporter#915
• refactor: use custom registry instead of defaults, fix filteredTargets mutations by @burningalchemist in refactor: use custom registry instead of defaults, fix filteredTargets mutations burningalchemist/sql_exporter#916
• build: generate drivers with std lib only [skip ci] by @burningalchemist in build: generate drivers with std lib only [skip ci] burningalchemist/sql_exporter#908

CVE addressed:

• CVE-2026-26958

Updated dependencies

Database drivers

• MSSQL 1.9.7

Others

• aws-sdk-go-v2/config 1.32.10
• aws-sdk-go-v2/service/secretsmanager 1.41.2
• aws/aws-sdk-go-v2 v1.41.2

Full Changelog: burningalchemist/sql_exporter@0.19.1...0.20.0