Don't run the Insiders Build workflow in forks (#13733)

Author: jakebailey

.github/workflows/insiders.yml

@@ -23,6 +23,7 @@ jobs:
   build-vsix:
     name: Build VSIX
     runs-on: ubuntu-latest
+    if: github.repository == 'microsoft/vscode-python'
     steps:
       - name: Checkout
         uses: actions/checkout@v2
@@ -63,6 +64,7 @@ jobs:
   lint:
     name: Lint
     runs-on: ubuntu-latest
+    if: github.repository == 'microsoft/vscode-python'
     steps:
       - name: Checkout
         uses: actions/checkout@v2
@@ -119,6 +121,7 @@ jobs:
     name: Tests
     # The value of runs-on is the OS of the current job (specified in the strategy matrix below) instead of being hardcoded.
     runs-on: ${{ matrix.os }}
+    if: github.repository == 'microsoft/vscode-python'
     strategy:
       fail-fast: false
       matrix:
@@ -347,6 +350,7 @@ jobs:
     name: Smoke tests
     # The value of runs-on is the OS of the current job (specified in the strategy matrix below) instead of being hardcoded.
     runs-on: ${{ matrix.os }}
+    if: github.repository == 'microsoft/vscode-python'
     needs: [build-vsix]
     strategy:
       fail-fast: false

.github/workflows/release.yml

@@ -24,6 +24,7 @@ jobs:
   build-vsix:
     name: Build VSIX
     runs-on: ubuntu-latest
+    if: github.repository == 'microsoft/vscode-python'
     steps:
       - name: Checkout
         uses: actions/checkout@v2
@@ -66,6 +67,7 @@ jobs:
     # will be caught when we merge back into 'main'.
     name: Lint
     runs-on: ubuntu-latest
+    if: github.repository == 'microsoft/vscode-python'
     steps:
       - name: Checkout
         uses: actions/checkout@v2
@@ -99,6 +101,7 @@ jobs:
     name: Tests
     # The value of runs-on is the OS of the current job (specified in the strategy matrix below) instead of being hardcoded.
     runs-on: ${{ matrix.os }}
+    if: github.repository == 'microsoft/vscode-python'
     strategy:
       fail-fast: false
       matrix:
@@ -319,6 +322,7 @@ jobs:
     name: Smoke tests
     # The value of runs-on is the OS of the current job (specified in the strategy matrix below) instead of being hardcoded.
     runs-on: ${{ matrix.os }}
+    if: github.repository == 'microsoft/vscode-python'
     needs: [build-vsix]
     strategy:
       fail-fast: false