Investigate commented out tutorial validations

[marcduiker]

Many of the tutorial validations in the GitHub validate_tutorials.yaml file are commented out and thus not running.

      # - name: Validate distributed-calculator
      #   if: matrix.os == 'ubuntu-latest'
      #   run: |
      #     pushd tutorials/distributed-calculator
      #     make validate
      #     popd
      # - name: Validate pub-sub
      #   if: matrix.os == 'ubuntu-latest'
      #   run: |
      #     pushd tutorials/pub-sub
      #     make validate
      #     popd
      # - name: Validate bindings
      #   if: matrix.os == 'ubuntu-latest'
      #   run: |
      #     pushd tutorials/bindings
      #     make validate
      #     popd
      # - name: Validate secretstore
      #   if: matrix.os == 'ubuntu-latest'
      #   run: |
      #     pushd tutorials/secretstore
      #     make validate
      #     popd
      # - name: Validate observability
      #   if: matrix.os == 'ubuntu-latest'
      #   run: |
      #     pushd tutorials/observability
      #     make validate
      #     popd

I've tried to run the bindings and secretstore validations locally and they are failing.

I presume these validations have been commented out (temporarily) to get a green validation result.

I suggest we investigate why these validations are failing, and fix where possible.