chore(deps): update taiki-e/install-action digest to 8c39981 (#480)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

.github/workflows/ci.yaml

@@ -22,7 +22,7 @@ jobs:
       - name: Set up Rust
         run: rustup default nightly
       - name: Install development tools
-        uses: taiki-e/install-action@68f28718b79cadeadb57e92fa0b1cfb0161dc473
+        uses: taiki-e/install-action@8c39981484df4e7ba41af8e8e078ac546d5e1b11
         with:
           tool: cargo-deny@0.16.3, cargo-udeps@0.1.53, cargo-hack@0.6.33
       - name: Install Rust linters
@@ -56,7 +56,7 @@ jobs:
       - name: Set up Rust
         run: rustup default ${{ matrix.channel }}
       - name: Install development tools
-        uses: taiki-e/install-action@68f28718b79cadeadb57e92fa0b1cfb0161dc473
+        uses: taiki-e/install-action@8c39981484df4e7ba41af8e8e078ac546d5e1b11
         with:
           tool: cargo-hack@0.6.33
       - name: Run tests
@@ -70,7 +70,7 @@ jobs:
       - name: Set up Rust
         run: rustup default nightly
       - name: Install development tools
-        uses: taiki-e/install-action@68f28718b79cadeadb57e92fa0b1cfb0161dc473
+        uses: taiki-e/install-action@8c39981484df4e7ba41af8e8e078ac546d5e1b11
         with:
           tool: cargo-llvm-cov@0.6.14, cargo-hack@0.6.33
       - name: Create directories