Update a couple flakey tests

[ijjk]

The pnpm and next info tests seem to still flake occasionally but aren't signaling actual failures so this tweaks them to be more stable.

x-ref: https://github.com/vercel/next.js/runs/6515899829?check_suite_focus=true
x-ref: https://github.com/vercel/next.js/runs/6515899684?check_suite_focus=true
x-ref: https://github.com/vercel/next.js/runs/6524725633?check_suite_focus=true
x-ref: #37047

[ijjk]

Stats from current PR

Default Build (Increase detected ⚠️)

General

	vercel/next.js canary	ijjk/next.js update/tests	Change
buildDuration	18.4s	19s	⚠️ +605ms
buildDurationCached	7.4s	7.4s	-39ms
nodeModulesSize	479 MB	479 MB	✓

Page Load Tests Overall increase ✓

	vercel/next.js canary	ijjk/next.js update/tests	Change
/ failed reqs	0	0	✓
/ total time (seconds)	4.608	4.581	-0.03
/ avg req/sec	542.5	545.69	+3.19
/error-in-render failed reqs	0	0	✓
/error-in-render total time (seconds)	1.582	1.565	-0.02
/error-in-render avg req/sec	1579.94	1597.74	+17.8

Client Bundles (main, webpack)

	vercel/next.js canary	ijjk/next.js update/tests	Change
925.HASH.js gzip	179 B	179 B	✓
framework-HASH.js gzip	42 kB	42 kB	✓
main-HASH.js gzip	29 kB	29 kB	✓
webpack-HASH.js gzip	1.44 kB	1.44 kB	✓
Overall change	72.6 kB	72.6 kB	✓

Legacy Client Bundles (polyfills)

	vercel/next.js canary	ijjk/next.js update/tests	Change
polyfills-HASH.js gzip	31 kB	31 kB	✓
Overall change	31 kB	31 kB	✓

Client Pages

	vercel/next.js canary	ijjk/next.js update/tests	Change
_app-HASH.js gzip	1.36 kB	1.36 kB	✓
_error-HASH.js gzip	193 B	193 B	✓
amp-HASH.js gzip	308 B	308 B	✓
css-HASH.js gzip	327 B	327 B	✓
dynamic-HASH.js gzip	2.71 kB	2.71 kB	✓
head-HASH.js gzip	359 B	359 B	✓
hooks-HASH.js gzip	920 B	920 B	✓
image-HASH.js gzip	5.73 kB	5.73 kB	✓
index-HASH.js gzip	263 B	263 B	✓
link-HASH.js gzip	2.65 kB	2.65 kB	✓
routerDirect..HASH.js gzip	320 B	320 B	✓
script-HASH.js gzip	391 B	391 B	✓
withRouter-HASH.js gzip	318 B	318 B	✓
85e02e95b279..7e3.css gzip	107 B	107 B	✓
Overall change	16 kB	16 kB	✓

Client Build Manifests

	vercel/next.js canary	ijjk/next.js update/tests	Change
_buildManifest.js gzip	458 B	458 B	✓
Overall change	458 B	458 B	✓

Rendered Page Sizes

	vercel/next.js canary	ijjk/next.js update/tests	Change
index.html gzip	533 B	533 B	✓
link.html gzip	547 B	547 B	✓
withRouter.html gzip	528 B	528 B	✓
Overall change	1.61 kB	1.61 kB	✓

---

Default Build with SWC (Increase detected ⚠️)

General

	vercel/next.js canary	ijjk/next.js update/tests	Change
buildDuration	20.9s	20.8s	-151ms
buildDurationCached	7.5s	7.4s	-32ms
nodeModulesSize	479 MB	479 MB	✓

Page Load Tests Overall increase ✓

	vercel/next.js canary	ijjk/next.js update/tests	Change
/ failed reqs	0	0	✓
/ total time (seconds)	4.651	4.66	⚠️ +0.01
/ avg req/sec	537.48	536.52	⚠️ -0.96
/error-in-render failed reqs	0	0	✓
/error-in-render total time (seconds)	1.626	1.543	-0.08
/error-in-render avg req/sec	1537.9	1620.23	+82.33

Client Bundles (main, webpack)

	vercel/next.js canary	ijjk/next.js update/tests	Change
925.HASH.js gzip	178 B	178 B	✓
framework-HASH.js gzip	42.7 kB	42.7 kB	✓
main-HASH.js gzip	29.5 kB	29.5 kB	✓
webpack-HASH.js gzip	1.45 kB	1.45 kB	✓
Overall change	73.8 kB	73.8 kB	✓

Legacy Client Bundles (polyfills)

	vercel/next.js canary	ijjk/next.js update/tests	Change
polyfills-HASH.js gzip	31 kB	31 kB	✓
Overall change	31 kB	31 kB	✓

Client Pages

	vercel/next.js canary	ijjk/next.js update/tests	Change
_app-HASH.js gzip	1.35 kB	1.35 kB	✓
_error-HASH.js gzip	179 B	179 B	✓
amp-HASH.js gzip	311 B	311 B	✓
css-HASH.js gzip	324 B	324 B	✓
dynamic-HASH.js gzip	2.89 kB	2.89 kB	✓
head-HASH.js gzip	357 B	357 B	✓
hooks-HASH.js gzip	920 B	920 B	✓
image-HASH.js gzip	5.82 kB	5.82 kB	✓
index-HASH.js gzip	261 B	261 B	✓
link-HASH.js gzip	2.78 kB	2.78 kB	✓
routerDirect..HASH.js gzip	322 B	322 B	✓
script-HASH.js gzip	392 B	392 B	✓
withRouter-HASH.js gzip	317 B	317 B	✓
85e02e95b279..7e3.css gzip	107 B	107 B	✓
Overall change	16.3 kB	16.3 kB	✓

Client Build Manifests

	vercel/next.js canary	ijjk/next.js update/tests	Change
_buildManifest.js gzip	457 B	457 B	✓
Overall change	457 B	457 B	✓

Rendered Page Sizes

	vercel/next.js canary	ijjk/next.js update/tests	Change
index.html gzip	532 B	532 B	✓
link.html gzip	546 B	546 B	✓
withRouter.html gzip	527 B	527 B	✓
Overall change	1.6 kB	1.6 kB	✓

Commit: 859bd98