Merge #668

668: Bump tracing-subscriber from 0.2.19 to 0.2.20 r=thomaseizinger a=dependabot[bot]

Bumps [tracing-subscriber](https://github.com/tokio-rs/tracing) from 0.2.19 to 0.2.20.
<details>
<summary>Commits</summary>
<ul>
<li><a href="26506d5eaa"><code>26506d5</code></a> subscriber: prepare to release v0.2.20 (<a href="https://github-redirect.dependabot.com/tokio-rs/tracing/issues/1514">#1514</a>)</li>
<li><a href="0049ae3d82"><code>0049ae3</code></a> core: prepare to release 0.1.19 (<a href="https://github-redirect.dependabot.com/tokio-rs/tracing/issues/1513">#1513</a>)</li>
<li><a href="306598d5db"><code>306598d</code></a> opentelemetry: prepare for 0.15.0 release (<a href="https://github-redirect.dependabot.com/tokio-rs/tracing/issues/1501">#1501</a>) (<a href="https://github-redirect.dependabot.com/tokio-rs/tracing/issues/1506">#1506</a>)</li>
<li><a href="e6c53e649d"><code>e6c53e6</code></a> examples: use <code>tempfile</code> in<code>fmt-multiple-writers</code></li>
<li><a href="1b8fce963d"><code>1b8fce9</code></a> chore: don't include dev-dependencies in MSRV builds at all</li>
<li><a href="7279cf04fe"><code>7279cf0</code></a> chore: ignore unmaintained warning for <code>net2</code> in <code>cargo audit</code></li>
<li><a href="20e1588cfb"><code>20e1588</code></a> examples: use <code>tempfile</code> in <code>inferno-flame</code></li>
<li><a href="058c9e2519"><code>058c9e2</code></a> flame: replace <code>tempdir</code> with <code>tempfile</code></li>
<li><a href="edc85a9ba8"><code>edc85a9</code></a> appender: replace <code>tempdir</code> with <code>tempfile</code></li>
<li><a href="cc40b68ed0"><code>cc40b68</code></a> examples: bump <code>hyper</code> dep to 0.14.11</li>
<li>Additional commits viewable in <a href="https://github.com/tokio-rs/tracing/compare/tracing-subscriber-0.2.19...tracing-subscriber-0.2.20">compare view</a></li>
</ul>
</details>
<br />


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Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Cargo.lock

@@ -4600,9 +4600,9 @@ dependencies = [
 
 [[package]]
 name = "tracing-subscriber"
-version = "0.2.19"
+version = "0.2.20"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "ab69019741fca4d98be3c62d2b75254528b5432233fd8a4d2739fec20278de48"
+checksum = "b9cbe87a2fa7e35900ce5de20220a582a9483a7063811defce79d7cbd59d4cfe"
 dependencies = [
  "ansi_term 0.12.1",
  "chrono",