github/workflow: upgrade neovim version to v0.6.1

Signed-off-by: Koichi Shiraishi <[email protected]>

Author: zchee

.github/workflows/benchmark.yml

@@ -61,7 +61,7 @@ jobs:
       if: steps.cache-nvim.outputs.cache-hit != 'true'
       with:
         neovim: true
-        version: v0.5.0
+        version: v0.6.1
 
     - name: Run Benchmark
       run: |

.github/workflows/test.yml

@@ -30,7 +30,7 @@ jobs:
           - 1.16.x
           - 1.17.x
         neovim-version:
-          - v0.6.0
+          - v0.6.1
           - nightly
       fail-fast: false