Update spl-token to v2.0 (bp #11884)

[mergify]

This is an automated backport of pull request #11884 done by Mergify

Cherry-pick of 76be36c has failed:

On branch mergify/bp/v1.2/pr-11884
Your branch is up to date with 'origin/v1.2'.

You are currently cherry-picking commit 76be36c9c.
  (fix conflicts and run "git cherry-pick --continue")
  (use "git cherry-pick --abort" to cancel the cherry-pick operation)

Changes to be committed:

	modified:   account-decoder/src/parse_account_data.rs
	modified:   account-decoder/src/parse_token.rs
	modified:   core/src/rpc_subscriptions.rs
	modified:   transaction-status/src/parse_instruction.rs
	modified:   transaction-status/src/parse_token.rs

Unmerged paths:
  (use "git add <file>..." to mark resolution)

	both modified:   Cargo.lock
	both modified:   account-decoder/Cargo.toml
	both modified:   core/Cargo.toml
	both modified:   core/src/rpc.rs
	both modified:   transaction-status/Cargo.toml

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[mergify]

automerge label removed due to a CI failure

[mergify]

automerge label removed due to a CI failure

[codecov]

Codecov Report

Merging #11896 into v1.2 will increase coverage by 0.0%.
The diff coverage is 95.4%.

@@           Coverage Diff           @@
##            v1.2   #11896    +/-   ##
=======================================
  Coverage   81.9%    82.0%            
=======================================
  Files        320      321     +1     
  Lines      76608    77025   +417     
=======================================
+ Hits       62811    63183   +372     
- Misses     13797    13842    +45