Update dependencies to v3

[renovate]

This PR contains the following updates:

Package	Change	Age	Confidence
@actions/core (source)	1.11.1 → 3.0.1
@actions/exec (source)	1.1.1 → 3.0.0

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Release Notes

actions/toolkit (@​actions/core)

v3.0.1

• Bump undici from 6.23.0 to 6.24.1 #​2348

v3.0.0

• Breaking change: Package is now ESM-only
  • CommonJS consumers must use dynamic import() instead of require()

v2.0.3

• Bump @actions/http-client to 3.0.2

v2.0.1

• Bump @​actions/exec from 1.1.1 to 2.0.0 #​2199

v2.0.0

• Add support for Node 24 #​2110
• Bump @​actions/http-client from 2.0.1 to 3.0.0

actions/toolkit (@​actions/exec)

v3.0.0

• Breaking change: Package is now ESM-only
  • CommonJS consumers must use dynamic import() instead of require()

v2.0.0

• Add support for Node 24 #​2110
• Bump @​actions/io dependency from ^1.0.1 to ^2.0.0

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