bump solana to 1.9.18

[0xripleys]

this picks up a newer anchor-lang dependency which is nice.

copied deps from andreihrs@07e03db per Ra's suggestion

I had to fix some clippy stuff as well

[codecov-commenter]

Codecov Report

Merging #97 (b37ae42) into upcoming (6a2d4aa) will decrease coverage by 0.10%.
The diff coverage is 68.23%.

@@             Coverage Diff              @@
##           upcoming      #97      +/-   ##
============================================
- Coverage     81.95%   81.85%   -0.11%     
============================================
  Files            33       32       -1     
  Lines          7731     7681      -50     
============================================
- Hits           6336     6287      -49     
+ Misses         1395     1394       -1     

Impacted Files	Coverage Δ
token-lending/cli/src/main.rs	0.18% <0.00%> (-0.01%)	⬇️
token-lending/program/tests/helpers/mod.rs	90.34% <86.36%> (ø)
...nding/program/tests/borrow_obligation_liquidity.rs	98.30% <100.00%> (-0.02%)	⬇️
...ing/program/tests/deposit_obligation_collateral.rs	98.55% <100.00%> (-0.03%)	⬇️
...lending/program/tests/deposit_reserve_liquidity.rs	100.00% <100.00%> (ø)
...sit_reserve_liquidity_and_obligation_collateral.rs	100.00% <100.00%> (ø)
token-lending/program/tests/flash_loan.rs	100.00% <100.00%> (ø)
token-lending/program/tests/init_lending_market.rs	100.00% <100.00%> (ø)
token-lending/program/tests/init_obligation.rs	100.00% <100.00%> (ø)
token-lending/program/tests/init_reserve.rs	100.00% <100.00%> (ø)
... and 32 more

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