Update bigdecimal on CI where required

Author: andyundso

.github/workflows/ci.yml

@@ -74,6 +74,10 @@ jobs:
         with:
           name: gem-x64-mingw32
 
+      - name: Install bigdecimal gem
+        shell: pwsh
+        run: gem install bigdecimal --no-document
+
       - name: Install native gem
         shell: pwsh
         run: |
@@ -119,6 +123,10 @@ jobs:
         with:
           name: gem-x64-mingw32
 
+      - name: Install bigdecimal gem
+        shell: pwsh
+        run: gem install bigdecimal --no-document
+
       - name: Install native gem and restore cross-compiled code from it
         shell: pwsh
         run: |
@@ -240,6 +248,10 @@ jobs:
         with:
           name: gem-x64-mingw-ucrt
 
+      - name: Install bigdecimal gem
+        shell: pwsh
+        run: gem install bigdecimal --no-document
+
       - name: Install native gem and restore cross-compiled code from it
         shell: pwsh
         run: |
@@ -311,6 +323,10 @@ jobs:
           ruby-version: ${{ matrix.ruby-version }}
           bundler-cache: true
 
+      - name: Install bigdecimal gem
+        shell: pwsh
+        run: gem install bigdecimal --no-document
+
       - name: Build gem
         shell: pwsh
         run: gem build tiny_tds.gemspec
@@ -454,6 +470,10 @@ jobs:
         shell: bash
         run: gem build tiny_tds.gemspec
 
+      - name: Install bigdecimal gem
+        shell: bash
+        run: gem install bigdecimal --no-document
+
       - name: Install gem and test if TinyTDS loads
         shell: bash
         run: |