Bump MSRV to 1.46.0

Because one of our dependencies (namingly `socket2`) uses match in a
const fn, which is stabilized in rust 1.46.0, we bump to this version as
MSRV for this crate.

Signed-off-by: Matthias Beyer <[email protected]>
Tested-by: Matthias Beyer <[email protected]>

Author: matthiasbeyer

.github/workflows/msrv.yml

@@ -9,7 +9,7 @@ jobs:
     strategy:
       matrix:
         rust:
-          - 1.44.0
+          - 1.46.0
           - stable
           - beta
           - nightly
@@ -44,7 +44,7 @@ jobs:
     strategy:
       matrix:
         rust:
-          - 1.44.0
+          - 1.46.0
           - stable
           - beta
           - nightly
@@ -59,13 +59,13 @@ jobs:
           override: true
 
       - name: Run cargo test
-        if: matrix.rust != 'nightly' && matrix.rust != '1.44.0'
+        if: matrix.rust != 'nightly' && matrix.rust != '1.46.0'
         uses: actions-rs/cargo@v1
         with:
           command: test
 
       - name: Run cargo test (nightly)
-        if: matrix.rust == '1.44.0'
+        if: matrix.rust == '1.46.0'
         continue-on-error: true
         uses: actions-rs/cargo@v1
         with: