.github/workflows: change tabs to spaces

Change-Id: Id5cb1a5f339e22c85f0282ce625773d2dff8ab16
Reviewed-on: https://go-review.googlesource.com/c/vscode-go/+/317293
Trust: Suzy Mueller <suzmue@golang.org>
Run-TryBot: Suzy Mueller <suzmue@golang.org>
TryBot-Result: kokoro <noreply+kokoro@google.com>
Reviewed-by: Hyang-Ah Hana Kim <hyangah@gmail.com>
diff --git a/.github/workflows/test-long-all.yml b/.github/workflows/test-long-all.yml
index 92355de..b47da3f 100644
--- a/.github/workflows/test-long-all.yml
+++ b/.github/workflows/test-long-all.yml
@@ -61,7 +61,7 @@
             go get github.com/ramya-rao-a/go-outline
             go get github.com/go-delve/delve/cmd/dlv@master
             cp "${HOME}/go/bin/dlv${{env.EXT}}" "${HOME}/go/bin/dlv-dap${{env.EXT}}"
-			go get github.com/go-delve/delve/cmd/dlv
+            go get github.com/go-delve/delve/cmd/dlv
         env:
           GO111MODULE: on
           EXT: "${{ matrix.os == 'windows-latest' && '.exe' || ''}}"
diff --git a/.github/workflows/test-long.yml b/.github/workflows/test-long.yml
index f09442a..7f450b4 100644
--- a/.github/workflows/test-long.yml
+++ b/.github/workflows/test-long.yml
@@ -60,7 +60,7 @@
             go get github.com/ramya-rao-a/go-outline
             go get github.com/go-delve/delve/cmd/dlv@master
             cp "${HOME}/go/bin/dlv${{env.EXT}}" "${HOME}/go/bin/dlv-dap${{env.EXT}}"
-			go get github.com/go-delve/delve/cmd/dlv
+            go get github.com/go-delve/delve/cmd/dlv
         env:
           GO111MODULE: on
           EXT: "${{ matrix.os == 'windows-latest' && '.exe' || ''}}"
diff --git a/.github/workflows/test-smoke.yml b/.github/workflows/test-smoke.yml
index 2d64133..83ce5a7 100644
--- a/.github/workflows/test-smoke.yml
+++ b/.github/workflows/test-smoke.yml
@@ -58,7 +58,7 @@
             go get github.com/ramya-rao-a/go-outline
             go get github.com/go-delve/delve/cmd/dlv@master
             cp "${HOME}/go/bin/dlv${{env.EXT}}"  "${HOME}/go/bin/dlv-dap${{env.EXT}}"
-			go get github.com/go-delve/delve/cmd/dlv
+            go get github.com/go-delve/delve/cmd/dlv
         env:
           GO111MODULE: on
           EXT: "${{ matrix.os == 'windows-latest' && '.exe' || ''}}"