fix(BREAKING): remove anyhow

[dsherret]

format_text never returned an Err — every path was Ok(...) — so rather than introduce an error type that can never be constructed, this drops the Result entirely and returns Option<String>.

• removed the anyhow dependency
• format_text now returns Option<String> instead of anyhow::Result<Option<String>>
• wasm_plugin.rs drops the now-unnecessary .map_err(FormatError::new)?
• dprint-development 0.10.1 -> 0.11.0, whose run_specs callback returns Result<Option<String>, Box<dyn Error + Send + Sync>> rather than an anyhow result

Also in here:

• Cargo.lock is no longer gitignored, and is now committed
• deno.json uses jsr:@dprint/automation@0.12.2 instead of the raw.githubusercontent URLs at 0.10.0. The JSR package only exports . and ./tasks/publish-release, so the "automation/" prefix mapping is gone and generateReleaseNotes.ts imports generateChangeLog from the root export (mod.ts re-exports ./changelog.ts). The release workflow's pinned publish-release task moved 0.10.3 -> 0.12.2 to match. deno.lock was deleted and regenerated with deno install.
• formatted scripts/update.ts, which had a $.log(...) line over the line width

BREAKING: format_text's signature changed, so callers doing format_text(..)? need to drop the ?.