bump dependency versions

[larry0x]

Closes: #3

Including k256 as a dependency leads to a compilation error:

$ cargo build --target wasm32-unknown-unknown

Compiling subtle v2.4.1
   Compiling cfg-if v1.0.0
   Compiling zeroize v1.5.7
   Compiling const-oid v0.9.0
   Compiling itoa v1.0.4
   Compiling base64ct v1.5.3
   Compiling typenum v1.15.0
   Compiling serde v1.0.145
   Compiling serde_json v1.0.86
   Compiling ryu v1.0.11
   Compiling generic-array v0.14.6
   Compiling schemars v0.8.11
   Compiling crunchy v0.2.2
   Compiling dyn-clone v1.0.9
   Compiling thiserror v1.0.37
   Compiling hex v0.4.3
   Compiling getrandom v0.2.7
error: the wasm32-unknown-unknown target is not supported by default, you may need to enable the "js" feature. For more information see: https://docs.rs/getrandom/#webassembly-support
   --> /Users/larry/.cargo/registry/src/git.luolix.top-1ecc6299db9ec823/getrandom-0.2.7/src/lib.rs:235:9
    |
235 | /         compile_error!("the wasm32-unknown-unknown target is not supported by \
236 | |                         default, you may need to enable the \"js\" feature. \
237 | |                         For more information see: \
238 | |                         https://docs.rs/getrandom/#webassembly-support");
    | |________________________________________________________________________^

   Compiling base16ct v0.1.1
error[E0433]: failed to resolve: use of undeclared crate or module `imp`
   --> /Users/larry/.cargo/registry/src/git.luolix.top-1ecc6299db9ec823/getrandom-0.2.7/src/lib.rs:262:5
    |
262 |     imp::getrandom_inner(dest)
    |     ^^^ use of undeclared crate or module `imp`

For more information about this error, try `rustc --explain E0433`.
error: could not compile `getrandom` due to 2 previous errors
warning: build failed, waiting for other jobs to finish...

This PR removes k256 and bump all dependencies to latest.

[webmaster128]

Could you add those Wasm build check to the CI? This will prevent such problems in the future: https://github.com/CosmWasm/cw-storage-plus/pull/23/files

[larry0x]

@webmaster128 Removed anyhow and serde_json, updated CI

[webmaster128]

I wonder if there are breaking change in the prost cw2 or cw-storage-plus upgrades that affect this create. I'm not familiar with the codebase. The rest LGTM.

[webmaster128]

Turned on "Build forked pull requests" now

[ueco-jb]

Just suggestions, since it's the same.

[ueco-jb]

Suggested change

	prost = "0.11.0"
	prost = "0.11"

[webmaster128]

The problem with those changes it it makes the patch release invisible. This is often the cause for setting the min version of a dependency too low. If there is .0 you see that you either want .0 or that you want something else.

[ueco-jb]

IMO it doesn't make them invisible - it literally means the same. I would go even further, some users who don't understand how Cargo dep versioning works might be confused.
I'm good either way. 👍

[ueco-jb]

Suggested change

	cw2 = "1.0.0"
	cw2 = "1.0"