Bump serde_json from 1.0.116 to 1.0.122 in /example

[dependabot[bot]]

Bumps serde_json from 1.0.116 to 1.0.122.

Release notes

Sourced from serde_json's releases.

v1.0.122

• Support using json! in no-std crates (#1166)

v1.0.121

• Optimize position search in error path (#1160, thanks @​purplesyringa)

v1.0.120

• Correctly specify required version of indexmap dependency (#1152, thanks @​cforycki)

v1.0.119

• Add serde_json::Map::shift_insert (#1149, thanks @​joshka)

v1.0.118

• Implement Hash for serde_json::Value (#1127, thanks @​edwardycl)

v1.0.117

• Resolve unexpected_cfgs warning (#1130)

Commits

• 54381d6 Release 1.0.122
• 16fb6e0 Work around buggy rust-analyzer behavior
• 49d7d66 Merge pull request #1166 from dtolnay/allocvec
• 6827c7b Fix json! invocations when std prelude is not in scope
• 611b2a4 Merge pull request #1165 from serde-rs/jsonmac
• 7633cb7 Eliminate local_inner_macros in favor of non-ident macro paths
• eca2658 Release 1.0.121
• b0d678c Merge pull request #1160 from iex-rs/efficient-position
• b1edc7d Optimize position search in error path
• 40dd7f5 Merge pull request #1159 from iex-rs/fix-recursion
• Additional commits viewable in compare view

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