docs: encourage dev to use corepack

[leomotors]

Description

This PR includes

• Update pnpm lockfile to version 6.1 because someone accidently mess with lockfile
• Update docs to encourage dev to use corepack
• No longer allow node 16 and old version of pnpm

Why corepack?

corepack enable and corepack manage pnpm version for you. When you switch to another project (switching directory). pnpm version is automatically switched based on what is set on that project.

Type of change

• [X] Refactor or other

Checklist:

• [X] I have run pnpm format and my code don't have any linting issues
• [X] I have performed a self-review of my own code
• [X] I have made corresponding changes to the documentation

[github-actions[bot]]

Coverage Summary

Status	Category	Percentage	Covered / Total
🔵	Lines	48.22%	1410 / 2924
🔵	Statements	48.22%	1410 / 2924
🔵	Functions	38.94%	37 / 95
🔵	Branches	88.42%	107 / 121

File Coverage

File	Stmts	% Branch	% Funcs	% Lines	Uncovered Lines
src/Bot.ts	26.9%	100%	10%	26.9%	37-42, 45-49, 52-53, 56-58, 61-74, 77-98, 101-136, 139-166, 169-196
src/config.ts	100%	100%	100%	100%
src/prisma.ts	66.66%	0%	0%	66.66%	7, 12-15
src/__mocks__/config.ts	100%	100%	100%	100%
src/features/index.ts	100%	100%	100%	100%
src/features/memberUpdateLogger/index.ts	10.52%	100%	0%	10.52%	8-75
src/features/messagePruner/index.ts	80%	100%	0%	80%	8-9
src/features/messagePruner/pruneMessagesCommand.ts	16.55%	100%	0%	16.55%	24-144
src/features/messageReporter/index.ts	80%	100%	0%	80%	8-9
src/features/messageReporter/reportToModeratorMessageCommand.ts	14.86%	100%	0%	14.86%	22-147
src/features/nameChecker/checkName.ts	21.73%	100%	0%	21.73%	11-46
src/features/nameChecker/checkNameAgainstPatterns.ts	83.33%	83.33%	100%	83.33%	24-28
src/features/nameChecker/index.ts	31.25%	100%	0%	31.25%	10-31
src/features/nominations/index.ts	80%	100%	0%	80%	8-9
src/features/nominations/nominateCommand.ts	19.71%	100%	0%	19.71%	41-148, 151-213
src/features/ping/index.ts	80%	100%	0%	80%	8-9
src/features/ping/pingCommand.ts	62.5%	100%	0%	62.5%	10-15
src/features/preventEmojiSpam/index.ts	31.42%	100%	0%	31.42%	11-34
src/features/preventEmojiSpam/isEmojiPreventionEnabled.ts	100%	100%	100%	100%
src/features/profileInspector/index.ts	31.69%	100%	0%	31.69%	28-31, 43-50, 62-77, 96-104, 118-123, 125-186, 188-228, 230-253, 256, 259, 261-271, 274-289, 297-306
src/features/runtimeConfig/index.ts	75%	100%	0%	75%	9-11
src/features/runtimeConfig/inspectConfigCommand.ts	66.66%	100%	0%	66.66%	12-17
src/features/runtimeConfig/reloadConfigCommand.ts	65%	100%	0%	65%	13-19
src/features/slowmode/index.ts	80%	100%	0%	80%	8-9
src/features/slowmode/slowmodeCommand.ts	58.18%	100%	0%	58.18%	32-54
src/features/stickyMessage/channelLock.ts	100%	100%	100%	100%
src/features/stickyMessage/index.ts	40.62%	100%	0%	40.62%	13-31
src/features/stickyMessage/messageCooldown.ts	97.33%	100%	75%	97.33%	41-42
src/features/stickyMessage/messageCounter.ts	100%	80%	100%	100%
src/features/stickyMessage/stickyMessageHandler.ts	100%	100%	100%	100%
src/features/stickyMessage/stickyMessageRemove.ts	100%	100%	100%	100%
src/features/stickyMessage/stickyMessageSet.ts	83.8%	81.25%	100%	83.8%	28-33, 50-55, 63-67
src/features/stickyMessage/stickyMessages.ts	99%	80%	100%	99%	79
src/features/tempRole/expireCheck.ts	11.59%	100%	0%	11.59%	9-69
src/features/tempRole/index.ts	52.38%	100%	0%	52.38%	11-20
src/features/tempRole/temporaryRoleCommand.ts	38.93%	100%	0%	38.93%	44-112
src/features/threadPruner/activeThreadsCommand.ts	20.37%	100%	0%	20.37%	31-88, 91-126, 128-162
src/features/threadPruner/getActiveThreads.ts	36.84%	100%	0%	36.84%	8-19
src/features/threadPruner/getThreadStats.ts	18.6%	100%	0%	18.6%	9-43
src/features/threadPruner/index.ts	80%	100%	0%	80%	8-9
src/features/userInfo/index.ts	80%	100%	0%	80%	8-9
src/features/userInfo/userInfoCommand.ts	33.33%	100%	0%	33.33%	12-35
src/types/UserModerationLogEntry.ts	100%	100%	100%	100%
src/types/defineCommand.ts	100%	100%	100%	100%
src/types/definePlugin.ts	100%	100%	100%	100%
src/utils/ActionSet.ts	19.58%	0%	0%	19.58%	15-92
src/utils/RuntimeConfiguration.ts	74.13%	60%	100%	74.13%	33-37, 41-48, 53-54
src/utils/RuntimeConfigurationSchema.ts	100%	100%	100%	100%
src/utils/cache.ts	100%	100%	100%	100%
src/utils/createLogger.ts	33.33%	100%	0%	33.33%	4-9
src/utils/fake.ts	83.33%	66.66%	100%	83.33%	22-26
src/utils/generateTsv.ts	100%	100%	100%	100%
src/utils/isOnlyEmoji.ts	100%	100%	100%	100%
src/utils/prompt.ts	25.45%	100%	0%	25.45%	15-55
src/utils/sendDm.ts	100%	100%	100%	100%
src/utils/toLocalDate.ts	100%	100%	100%	100%
src/utils/typeGuards.ts	100%	100%	0%	100%