Update module mvdan.cc/gofumpt to v0.12.0

[renovate]

This PR contains the following updates:

Package	Change	Age	Confidence
mvdan.cc/gofumpt	v0.10.0 → v0.12.0

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Release Notes

mvdan/gofumpt (mvdan.cc/gofumpt)

v0.12.0

Compare Source

This release is based on Go 1.27's gofmt, and requires Go 1.26 or later.

A standard library import carrying a doc or inline comment is no longer moved
into the top import group, as the comment stayed behind and ended up detached
at the bottom of the group. See #​289.

Moving a standard library import up no longer leaves an empty line where it
used to be, which split the remaining imports into extra groups. See #​225.

A copyright header or package doc no longer makes gofumpt treat a single-line
first declaration as multi-line, adding an empty line after it.

An assignment whose right-hand side is separated by a comment is now left
alone, as merging the lines produced output which gofmt would change back.

v0.11.0

Compare Source

Like v0.10.0, this release is based on Go 1.26's gofmt, and requires Go 1.25 or later.

The multi-line function call rule introduced in v0.10.0 proved controversial,
so it is now the extra rule balance_calls, disabled by default.
It is also narrowed to only place the closing parenthesis on its own line
when the opening parenthesis ends a line. See #​74.

Avoid crashing when compiled with tinygo for Wasm, which lacks recover support,
by detecting commented-out code without the parser's bailout panic. See #​230.

Produce stable output in a single pass when a lone var declaration is adjacent
to a single-element var group, which previously required a second run. See #​355.

Keep the parentheses around an expression which begins with a composite literal
of the form T{...}, such as (s{}.Foo()), as they are required when the
expression starts an if, for, or switch clause. See #​356.

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[renovate]

ℹ️ Artifact update notice

File name: internal/tools/go.mod

In order to perform the update(s) described in the table above, Renovate ran the go get command, which resulted in the following additional change(s):

• 2 additional dependencies were updated

Details:

Package	Change
github.com/rogpeppe/go-internal	v1.14.1 -> v1.16.0
golang.org/x/mod	v0.39.0 -> v0.40.0