drop support of Go 1.16

[shogo82148]

I want to use new Reader.FieldPos method that is supported from Go 1.17.

https://future-architect.github.io/articles/20210811a/

The new Reader.FieldPos method returns the line and column corresponding to the start of a given field in the record most recently returned by Read.

Summary by CodeRabbit

• Chores
  • Streamlined the continuous integration process by narrowing the range of language versions tested.
  • Upgraded the core module to use a more current programming language version for improved consistency and performance.

[Copilot]

Pull Request Overview

This pull request drops support for Go versions earlier than 1.17 to leverage the new Reader.FieldPos method.

• Removed testing for Go versions 1.16, 1.15, 1.14, and 1.13 from the workflow.

Files not reviewed (1)

• go.mod: Language not supported

[coderabbitai]

Walkthrough

This pull request updates the continuous integration setup and the module configuration. The CI workflow in .github/workflows/test.yml has been modified by removing older Go versions from the test matrix. In addition, the Go module version in go.mod has been upgraded from 1.15 to 1.17, aligning the module with a more recent release of Go.

Changes

Files	Changes Summary
.github/workflows/test.yml	Removed Go versions "1.16", "1.15", "1.14", and "1.13" from the test matrix; tests will now run on a reduced set of versions.
go.mod	Updated the Go module version from 1.15 to 1.17.

Sequence Diagram(s)

sequenceDiagram
    participant Dev as Developer
    participant CI as GitHub Actions
    Dev->>CI: Push commit with workflow and module updates
    CI->>CI: Trigger test workflow with updated Go version matrix
    CI->>Dev: Report test results

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Possibly related PRs

• add Go 1.24 to the build matrix #34: Adjusts the CI workflow by adding a new Go version, directly affecting the test matrix.
• add Go 1.23 to the build matrix #33: Modifies the Go version matrix in the workflow by including a new version, which is related to the removals in this PR.

Poem

I'm a bunny with coding glee,
Hopping through changes so merrily.
Old Go versions have hopped away,
New ones now brighten the day.
With every commit, I cheer: hooray! 🥕🐇

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📜 Recent review details

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Review profile: CHILL
Plan: Pro

📥 Commits

Reviewing files that changed from the base of the PR and between 6b28950 and a0ef0d6.

📒 Files selected for processing (2)

• .github/workflows/test.yml (0 hunks)
• go.mod (1 hunks)

💤 Files with no reviewable changes (1)

• .github/workflows/test.yml

🔇 Additional comments (1)

go.mod (1)

3-3: Confirmed Go Version Upgrade to 1.17

The Go version has been updated to 1.17 as expected. This update aligns with the PR objective of dropping support for older versions (including Go 1.16) and enables the new Reader.FieldPos method. The change is straightforward and meets the planned upgrade.

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[coveralls]

Pull Request Test Coverage Report for Build 14079042461

Details

• 0 of 0 changed or added relevant lines in 0 files are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage remained the same at 78.75%

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Totals
Change from base Build 14078967279:	0.0%
Covered Lines:	378
Relevant Lines:	480

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💛 - Coveralls