Bump MSRV to 1.75.0

Author: tnull

.github/workflows/build.yml

@@ -6,11 +6,11 @@ jobs:
   build:
     strategy:
       matrix:
-        toolchain: [ stable, beta, 1.63.0 ] # 1.63.0 is current MSRV for vss-client
+        toolchain: [ stable, beta, 1.75.0 ] # 1.75.0 is current MSRV for vss-client
         include:
           - toolchain: stable
             check-fmt: true
-          - toolchain: 1.63.0
+          - toolchain: 1.75.0
             msrv: true
     runs-on: ubuntu-latest
     steps:
@@ -25,10 +25,7 @@ jobs:
       - name: Pin packages to allow for MSRV
         if: matrix.msrv
         run: |
-            cargo update -p proptest --precise "1.2.0" --verbose # proptest 1.3.0 requires rustc 1.64.0
-            cargo update -p regex --precise "1.9.6" --verbose # regex 1.10.0 requires rustc 1.65.0
-            cargo update -p tokio --precise "1.38.1" --verbose # tokio v1.39.0 requires rustc 1.70 or newer
-            cargo update -p tokio-util --precise "0.7.11" --verbose # tokio-util v0.7.12 requires rustc 1.70 or newer
+          cargo update -p idna_adapter --precise 1.1.0 # This has us use `unicode-normalization` which has a more conservative MSRV
       - name: Build on Rust ${{ matrix.toolchain }}
         run: cargo build --verbose --color always
       - name: Check formatting

README.md

@@ -9,4 +9,4 @@ and manage the essential state required for Lightning Network (LN) operations.
 Learn more [here](https://github.com/lightningdevkit/vss-server/blob/main/README.md).
 
 ## MSRV
-The Minimum Supported Rust Version (MSRV) is currently 1.63.0.
+The Minimum Supported Rust Version (MSRV) is currently 1.75.0.