ci: peg ci actions to rust version 1.81 (same as the Dockerfile)

Author: cdxker

.github/workflows/rust-tests.yml

@@ -14,7 +14,9 @@ jobs:
     runs-on: blacksmith-2vcpu-ubuntu-2204
     steps:
       - uses: actions/checkout@v4
-      - run: rustup update stable
+      - run: rustup update 1.81
+      - run: rustup default 1.81
+      - run: rustup component add rustfmt
       - name: Cargo fmt
         run: cargo fmt --manifest-path=./server/Cargo.toml -- --check
 
@@ -30,8 +32,9 @@ jobs:
             ~/.cargo/git
             target
           key: ${{ runner.os }}-cargo-${{ hashFiles('**/Cargo.lock') }}
+      - run: rustup update 1.81
+      - run: rustup default 1.81
       - run: rustup component add clippy
-      - run: rustup update stable
       - uses: clechasseur/rs-clippy-check@v3
         with:
           args: --features runtime-env --manifest-path server/Cargo.toml -- -D clippy::print_stdout -D warnings
@@ -56,7 +59,8 @@ jobs:
             ~/.cargo/git
             target
           key: ${{ runner.os }}-cargo-${{ hashFiles('**/Cargo.lock') }}
-      - run: rustup update stable
+      - run: rustup update 1.81
+      - run: rustup default 1.81
       - name: Installing Vaccum
         run: npm install -g @quobix/vacuum
       - name: Generating OpenAPI spec