Bump spl-token to v3.1.1 (backport #17951)

[mergify]

This is an automatic backport of pull request #17951 done by Mergify.
Cherry-pick of b7de369 has failed:

On branch mergify/bp/v1.7/pr-17951
Your branch is up to date with 'origin/v1.7'.

You are currently cherry-picking commit b7de36999.
  (fix conflicts and run "git cherry-pick --continue")
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Changes to be committed:
	modified:   transaction-status/Cargo.toml

Unmerged paths:
  (use "git add <file>..." to mark resolution)
	both modified:   Cargo.lock
	both modified:   account-decoder/Cargo.toml
	both modified:   accounts-cluster-bench/Cargo.toml
	both modified:   programs/bpf/Cargo.lock
	both modified:   rpc/Cargo.toml
	both modified:   tokens/Cargo.toml

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[solana-grimes]

😱 New commits were pushed while the automerge label was present.

[codecov]

Codecov Report

Merging #17958 (c6c97b2) into v1.7 (d6f1751) will decrease coverage by 0.0%.
The diff coverage is n/a.

@@            Coverage Diff            @@
##             v1.7   #17958     +/-   ##
=========================================
- Coverage    82.4%    82.4%   -0.1%     
=========================================
  Files         428      428             
  Lines      120230   120230             
=========================================
- Hits        99172    99162     -10     
- Misses      21058    21068     +10