chore(node12): remove node 12 from new workflows (#3344)

in #3332, new reusable
workflows were created for stencil's ci system to enable
parallelism/speed. these workflows were written with stencil v2 in mind,
and as a result target node v12. we removed v12 support for stencil
(v3+) in #3302. however, upon
merging `main` into `v3.0.0-dev`, we realized that we need to remove the
values for node 12 from the new workflows

.github/workflows/test-analysis.yml

@@ -11,8 +11,8 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        node: ['12', '14', '16']
-        os: ['ubuntu-latest', 'windows-latest']
+        node: [ '14', '16' ]
+        os: [ 'ubuntu-latest', 'windows-latest' ]
     runs-on: ${{ matrix.os }}
     steps:
       - name: Checkout Code

.github/workflows/test-e2e.yml

@@ -11,8 +11,8 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        node: ['12', '14', '16']
-        os: ['ubuntu-latest', 'windows-latest']
+        node: [ '14', '16' ]
+        os: [ 'ubuntu-latest', 'windows-latest' ]
     runs-on: ${{ matrix.os }}
     steps:
       - name: Checkout Code

.github/workflows/test-unit.yml

@@ -11,8 +11,8 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        node: ['12', '14', '16']
-        os: ['ubuntu-latest', 'windows-latest']
+        node: [ '14', '16' ]
+        os: [ 'ubuntu-latest', 'windows-latest' ]
     runs-on: ${{ matrix.os }}
     steps:
       - name: Checkout Code