fix/deno ~ specify deno::std deps

- best practice and strongly needed b/c Deno does *not* use semantic versioning
- avoids Deno warnings
- also avoids Deno prompts

# refs

- [fix(deno): specify deps (avoids Deno warnings)](yargs#464)
  - closed for non-participation at 1 yr open
- [fix(deno): refactor to avoid prompts during module import](yargs/yargs#2217 (comment))

## related discussion/issues

[refactor ~ implement *no-panic*/*no-prompt* changes](rivy/deno.dxx@a53375d) @@ <https://archive.is/Esp5e>

[fix(node): Make global.ts evaluate synchronously](denoland/deno_std#2098)
[Execution order of imports in deno is unclear/unexpected](denoland/deno#14243)
[std/node should avoid TLA](denoland/deno_std#2097)
[HowTO test that a module is *no-panic* and *no-prompt* when statically imported?](denoland/deno/issues/#15356)

[Discussion ~ Bring back permission prompt behind a flag](denoland/deno/issues/#3811)
[Security prompt by default (instead of throw)](denoland/deno/issues/#10183)
[Seeking a better UX for permissions](denoland/deno/issues/#11061)
[Design Meeting 2021-07-29 ~ `Prompt by default`](denoland/deno/issues/#11767)
[permission prompt problems](denoland/deno/issues/#11936)
[`deno repl` has permissions by default?](denoland/deno/issues/#12665)
[Bad UX with prompt by default](denoland/deno/issues/#13730)
[DENO_NO_PROMPT env var support](denoland/deno/issues/#14208)
[feat: Add DENO_NO_PROMPT variable](denoland/deno/issues/#14209)

deno.ts

@@ -2,7 +2,7 @@
 // Main entrypoint for Deno.
 //
 // TODO: find reasonable replacement for require logic.
-import * as path from 'https://deno.land/std/path/mod.ts'
+import * as path from 'https://deno.land/std@0.134.0/path/mod.ts'
 import { camelCase, decamelize, looksLikeNumber } from './build/lib/string-utils.js'
 import { YargsParser } from './build/lib/yargs-parser.js'
 import type { Arguments, ArgsInput, Parser, Options, DetailedArguments } from './build/lib/yargs-parser-types.d.ts'