Upgrade katyo/publish-crates to v2

.github/workflows/crates-io.yml

@@ -3,7 +3,7 @@ name: Crates.io
 on:
   push:
     tags:
-    - '**'
+      - '**'
 
 jobs:
   publish:
@@ -11,12 +11,12 @@ jobs:
     if: github.repository == 'VHDL-LS/rust_hdl'
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@v2
-    - uses: actions-rs/toolchain@v1
-      with:
+      - uses: actions/checkout@v2
+      - uses: actions-rs/toolchain@v1
+        with:
           toolchain: stable
           override: true
-    - uses: katyo/publish-crates@v1
-      with:
+      - uses: katyo/publish-crates@v2
+        with:
           registry-token: ${{ secrets.CRATES_IO_TOKEN }}
           ignore-unpublished-changes: true