Bump Golang 1.13.9

go1.13.9 (released 2020/03/19) includes fixes to the go command, tools, the
runtime, the toolchain, and the crypto/cypher package. See the Go 1.13.9
milestone on the issue tracker for details:

https://github.com/golang/go/issues?q=milestone%3AGo1.13.9+label%3ACherryPickApproved

full diff: https://github.com/golang/go/compare/go1.13.8...go1.13.9

Signed-off-by: Sebastiaan van Stijn <github@gone.nl>

.github/workflows/checks.yml

@@ -21,7 +21,7 @@ jobs:
       - name: Install Go
         uses: actions/setup-go@v1
         with:
-          go-version: '1.13.8'
+          go-version: '1.13.9'
 
       - name: Set env
         shell: bash
@@ -60,7 +60,7 @@ jobs:
       - name: Install Go
         uses: actions/setup-go@v1
         with:
-          go-version: '1.13.8'
+          go-version: '1.13.9'
 
       - name: Set env
         shell: bash
@@ -131,7 +131,7 @@ jobs:
       - name: Set up Go
         uses: actions/setup-go@v1
         with:
-          go-version: '1.13.8'
+          go-version: '1.13.9'
 
       - name: Checkout
         uses: actions/checkout@v1

.github/workflows/nightly.yml

@@ -12,7 +12,7 @@ jobs:
       - name: Set up Go
         uses: actions/setup-go@v1
         with:
-          go-version: '1.13.8'
+          go-version: '1.13.9'
 
       - name: Checkout
         uses: actions/checkout@v1
@@ -123,7 +123,7 @@ jobs:
       - name: Set up Go
         uses: actions/setup-go@v1
         with:
-          go-version: '1.13.8'
+          go-version: '1.13.9'
 
       - name: Checkout
         uses: actions/checkout@v1