Use new landing page generator

Use the new exporter-toolkit landing page generator feature.
* Update Go to 1.20.
* Update promu to 0.14.0.

Signed-off-by: SuperQ <superq@gmail.com>

.github/workflows/lint.yml

@@ -23,8 +23,8 @@ on:
       - master
 
 env:
-  PROMU_VER: '0.13.0'
-  PROMTOOL_VER: '2.32.1'
+  PROMU_VER: '0.14.0'
+  PROMTOOL_VER: '2.43.0'
 
 jobs:
   test:
@@ -33,7 +33,7 @@ jobs:
       - uses: actions/checkout@v3
       - uses: actions/setup-go@v3
         with:
-          go-version: '^1.17.5'
+          go-version: '^1.20.2'
 
       - name: Test
         run: make test
@@ -57,7 +57,7 @@ jobs:
       - uses: actions/checkout@v3
       - uses: actions/setup-go@v3
         with:
-          go-version: '^1.17.5'
+          go-version: '^1.20.2'
 
       - name: Install promtool
         run: |
@@ -89,7 +89,7 @@ jobs:
       - uses: actions/checkout@v3
       - uses: actions/setup-go@v3
         with:
-          go-version: '^1.17.5'
+          go-version: '^1.20.2'
 
       - name: golangci-lint
         uses: golangci/golangci-lint-action@v3

.github/workflows/release.yml

@@ -12,7 +12,7 @@ permissions:
   packages: write
 
 env:
-  PROMU_VER: '0.13.0'
+  PROMU_VER: '0.14.0'
 
 jobs:
   build:
@@ -25,7 +25,7 @@ jobs:
 
       - uses: actions/setup-go@v3
         with:
-          go-version: '^1.17.5'
+          go-version: '^1.20.2'
 
       - name: Install Build deps
         run: |

.github/workflows/spelling.yml

@@ -10,7 +10,7 @@ on:
       - master
 
 env:
-  PROMU_VER: 'v0.13.0'
+  PROMU_VER: 'v0.14.0'
 
 jobs:
   codespell: