ci: fix python version as string

.github/workflows/macos-linux-conda.yml

@@ -22,7 +22,7 @@ jobs:
         activate-environment: hpp-fcl
         auto-update-conda: true
         environment-file: .github/workflows/conda/conda-env.yml
-        python-version: 3.10
+        python-version: "3.10"
 
     - name: Install compilers on OSX
       if: contains(matrix.os, 'macos')

.github/workflows/windows-conda-clang.yml

@@ -24,7 +24,7 @@ jobs:
       with:
         activate-environment: fcl
         environment-file: .github/workflows/conda/conda-env.yml
-        python-version: 3.10
+        python-version: "3.10"
     - name: Install cmake and update conda
       run: |
         conda install cmake -c main

.github/workflows/windows-conda-v142.yml

@@ -23,7 +23,7 @@ jobs:
       with:
         activate-environment: fcl
         environment-file: .github/workflows/conda/conda-env.yml
-        python-version: 3.10
+        python-version: "3.10"
     - name: Install cmake and update conda
       run: |
         conda install cmake -c main