Extract major version of preCICE from the precice-version provided (#5)

Author: IshaanDesai

action.yml

@@ -36,9 +36,10 @@ runs:
         sudo apt update
         sudo apt install -y wget
         VERSION=${{ inputs.precice-version }}
-        wget https://github.com/precice/precice/releases/download/${VERSION}/libprecice2_${VERSION#v}_$(lsb_release -cs).deb
-        sudo apt install -y ./libprecice2_${VERSION#v}_$(lsb_release -cs).deb
-        rm libprecice2_${VERSION#v}_$(lsb_release -cs).deb
+        MAJORVERSION=${VERSION:1:1}
+        wget https://github.com/precice/precice/releases/download/${VERSION}/libprecice${MAJORVERSION}_${VERSION#v}_$(lsb_release -cs).deb
+        sudo apt install -y ./libprecice${MAJORVERSION}_${VERSION#v}_$(lsb_release -cs).deb
+        rm libprecice${MAJORVERSION}_${VERSION#v}_$(lsb_release -cs).deb
     
     - name: Get preCICE version hash
       if: steps.check.outputs.release == 'false'
@@ -138,4 +139,4 @@ runs:
       uses: actions/cache/save@v3
       with:
         path: ${{ inputs.install-prefix }}
-        key: ${{ runner.os }}-precice-${{ steps.get-hash.outputs.precice-hash }}
+        key: ${{ runner.os }}-precice-${{ steps.get-hash.outputs.precice-hash }}