bump msrv to 1.46: socket2 crate uses match in const fn

Author: msrd0

.github/workflows/rust.yml

@@ -33,7 +33,7 @@ jobs:
         runs-on: ${{ matrix.os }}
         strategy:
             matrix:
-                rust_release: [1.45, stable, nightly]
+                rust_release: [1.46, stable, nightly]
                 os: [ubuntu-latest, windows-latest, macOS-latest]
 
         steps:

README.tpl

@@ -25,11 +25,11 @@
     <a href="https://www.rust-lang.org/en-US/">
         <img src="https://img.shields.io/badge/Made%20with-Rust-orange.svg" alt='Build with Rust' />
     </a>
-    <a href="https://blog.rust-lang.org/2020/03/12/Rust-1.45.html">
-        <img src="https://img.shields.io/badge/rustc-1.45+-yellow.svg" alt='Minimum Rust Version' />
+    <a href="https://blog.rust-lang.org/2020/08/27/Rust-1.46.0.html">
+        <img src="https://img.shields.io/badge/rustc-1.46+-yellow.svg" alt='Minimum Rust Version' />
     </a>
 </p>
 
 {{readme}}
 
-@ 2020 Gero Gerke and [contributors](https://github.com/Empty2k12/influxdb-rust/graphs/contributors).
+@ 2020 Gero Gerke and [contributors](https://github.com/Empty2k12/influxdb-rust/graphs/contributors).