submodules: update clippy from d8b4269 to f5d868c

Fixes clippy toolstate.

Changes:
````
rustup rust-lang#55852
Fix "too" -> "foo" typo in format.rs
Fix `use_self` violation
Fix wrong suggestion for `redundant_closure_call`
Check for common metadata
Fix `use_self` false positive on `use` statements
Fix `use_self` false positive
Remove `+` from `has_unary_equivalent`
Fix dogfood
Update println! formatting
Fix false positive in check mode caused by `gen_deprecated`
RIIR update lints: Add check mode (update_lints.py rewrite complete)
changed into_iter to iter and fixed a lint check
Fix `collapsible_if` error
Fix `possible_missing_comma` false positives
format code
fix comment spacing
change single char str to char
add lint to lintarray macro
Revert "small fix"
small fix
added float support for mistyped literal lints
tmp progress
````

Author: matthiaskrgr

src/Cargo.lock

@@ -232,7 +232,7 @@ dependencies = [
 
 [[package]]
 name = "cargo_metadata"
-version = "0.6.0"
+version = "0.6.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "error-chain 0.12.0 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -302,7 +302,7 @@ dependencies = [
 name = "clippy"
 version = "0.0.212"
 dependencies = [
- "cargo_metadata 0.6.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "cargo_metadata 0.6.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "clippy-mini-macro-test 0.2.0",
  "clippy_dev 0.0.1",
  "clippy_lints 0.0.212",
@@ -336,7 +336,7 @@ dependencies = [
 name = "clippy_lints"
 version = "0.0.212"
 dependencies = [
- "cargo_metadata 0.6.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "cargo_metadata 0.6.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "if_chain 0.1.3 (registry+https://github.com/rust-lang/crates.io-index)",
  "itertools 0.7.8 (registry+https://github.com/rust-lang/crates.io-index)",
  "lazy_static 1.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -1283,7 +1283,7 @@ name = "miri"
 version = "0.1.0"
 dependencies = [
  "byteorder 1.2.3 (registry+https://github.com/rust-lang/crates.io-index)",
- "cargo_metadata 0.6.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "cargo_metadata 0.6.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "colored 1.6.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "compiletest_rs 0.3.16 (registry+https://github.com/rust-lang/crates.io-index)",
  "env_logger 0.5.12 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -1780,7 +1780,7 @@ name = "rls"
 version = "0.130.5"
 dependencies = [
  "cargo 0.33.0",
- "cargo_metadata 0.6.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "cargo_metadata 0.6.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "clippy_lints 0.0.212",
  "crossbeam-channel 0.2.6 (registry+https://github.com/rust-lang/crates.io-index)",
  "env_logger 0.5.12 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -2502,7 +2502,7 @@ dependencies = [
  "assert_cli 0.6.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "atty 0.2.11 (registry+https://github.com/rust-lang/crates.io-index)",
  "bytecount 0.3.2 (registry+https://github.com/rust-lang/crates.io-index)",
- "cargo_metadata 0.6.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "cargo_metadata 0.6.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "derive-new 0.5.4 (registry+https://github.com/rust-lang/crates.io-index)",
  "diff 0.1.11 (registry+https://github.com/rust-lang/crates.io-index)",
  "env_logger 0.5.12 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -3180,7 +3180,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 "checksum bytecount 0.3.2 (registry+https://github.com/rust-lang/crates.io-index)" = "f861d9ce359f56dbcb6e0c2a1cb84e52ad732cadb57b806adeb3c7668caccbd8"
 "checksum byteorder 1.2.3 (registry+https://github.com/rust-lang/crates.io-index)" = "74c0b906e9446b0a2e4f760cdb3fa4b2c48cdc6db8766a845c54b6ff063fd2e9"
 "checksum bytesize 1.0.0 (registry+https://github.com/rust-lang/crates.io-index)" = "716960a18f978640f25101b5cbf1c6f6b0d3192fab36a2d98ca96f0ecbe41010"
-"checksum cargo_metadata 0.6.0 (registry+https://github.com/rust-lang/crates.io-index)" = "2d6809b327f87369e6f3651efd2c5a96c49847a3ed2559477ecba79014751ee1"
+"checksum cargo_metadata 0.6.2 (registry+https://github.com/rust-lang/crates.io-index)" = "7d8dfe3adeb30f7938e6c1dd5327f29235d8ada3e898aeb08c343005ec2915a2"
 "checksum cc 1.0.25 (registry+https://github.com/rust-lang/crates.io-index)" = "f159dfd43363c4d08055a07703eb7a3406b0dac4d0584d96965a3262db3c9d16"
 "checksum cfg-if 0.1.5 (registry+https://github.com/rust-lang/crates.io-index)" = "0c4e7bb64a8ebb0d856483e1e682ea3422f883c5f5615a90d51a2c82fe87fdd3"
 "checksum chalk-engine 0.8.0 (registry+https://github.com/rust-lang/crates.io-index)" = "6749eb72e7d4355d944a99f15fbaea701b978c18c5e184a025fcde942b0c9779"