chore: Update to PolkadotSDK release stable2506

.github/workflows/coverage.yaml

@@ -7,6 +7,8 @@ concurrency:
   group: ${{ github.workflow }}-${{ github.ref }}
   cancel-in-progress: ${{ github.ref != 'refs/heads/master' }}
 
+env:
+  TARPAULIN_VERSION: "0.34.1"
 jobs:
   coverage:
     if: github.event.pull_request.draft == false
@@ -43,16 +45,14 @@ jobs:
     - name: Install deps
       run: sudo apt -y install protobuf-compiler
 
-    # TODO: Use `cargo install` with a specific version during the next PolkadotSDK uplift and Rust toolchain version upgrade.
     - name: Install Tarpaulin
       run: |
-        curl -L -o tarpaulin.tar.gz https://github.com/xd009642/tarpaulin/releases/download/0.31.4/cargo-tarpaulin-x86_64-unknown-linux-gnu.tar.gz
-        tar -zxvf tarpaulin.tar.gz -C $HOME/.cargo/bin
+        cargo install cargo-tarpaulin --version $TARPAULIN_VERSION --locked
         cargo tarpaulin --version
 
     - name: Run Tarpaulin
       run: |
-        cargo tarpaulin --features try-runtime,runtime-benchmarks
+        cargo tarpaulin --features runtime-benchmarks
 
     - name: Code Coverage Summary Report
       uses: irongut/CodeCoverageSummary@v1.2.0

.github/workflows/zepter.yml

@@ -30,8 +30,7 @@ jobs:
       run: rustup show
 
     - name: Install Zepter
-      #run: cargo install zepter -f --locked && zepter --version
-      run: cargo install zepter@1.78.2 --locked # TODO: use latest version once we bump toolchain version
+      run: cargo install zepter -f --locked && zepter --version
 
     - name: Check Rust features
       run: zepter run check