Use new GPG key when publishing (#61784)

The old key is revoked: https://grafana.com/blog/2023/01/12/grafana-labs-update-regarding-circleci-security-updates/
But it's added as a manual Drone repo secret
This switches to the new gpg key that's also used to publish to apt.grafana.com

.drone.yml

@@ -1316,11 +1316,11 @@ steps:
   - build-frontend-packages
   environment:
     GPG_KEY_PASSWORD:
-      from_secret: gpg_key_password
+      from_secret: packages_gpg_passphrase
     GPG_PRIV_KEY:
-      from_secret: gpg_priv_key
+      from_secret: packages_gpg_private_key
     GPG_PUB_KEY:
-      from_secret: gpg_pub_key
+      from_secret: packages_gpg_public_key
     GRAFANA_API_KEY:
       from_secret: grafana_api_key
   image: grafana/build-container:1.6.6
@@ -2034,11 +2034,11 @@ steps:
   - build-frontend-packages
   environment:
     GPG_KEY_PASSWORD:
-      from_secret: gpg_key_password
+      from_secret: packages_gpg_passphrase
     GPG_PRIV_KEY:
-      from_secret: gpg_priv_key
+      from_secret: packages_gpg_private_key
     GPG_PUB_KEY:
-      from_secret: gpg_pub_key
+      from_secret: packages_gpg_public_key
     GRAFANA_API_KEY:
       from_secret: grafana_api_key
   image: grafana/build-container:1.6.6
@@ -2690,11 +2690,11 @@ steps:
   - build-frontend-packages
   environment:
     GPG_KEY_PASSWORD:
-      from_secret: gpg_key_password
+      from_secret: packages_gpg_passphrase
     GPG_PRIV_KEY:
-      from_secret: gpg_priv_key
+      from_secret: packages_gpg_private_key
     GPG_PUB_KEY:
-      from_secret: gpg_pub_key
+      from_secret: packages_gpg_public_key
     GRAFANA_API_KEY:
       from_secret: grafana_api_key
   image: grafana/build-container:1.6.6
@@ -3425,11 +3425,11 @@ steps:
   - build-frontend-packages
   environment:
     GPG_KEY_PASSWORD:
-      from_secret: gpg_key_password
+      from_secret: packages_gpg_passphrase
     GPG_PRIV_KEY:
-      from_secret: gpg_priv_key
+      from_secret: packages_gpg_private_key
     GPG_PUB_KEY:
-      from_secret: gpg_pub_key
+      from_secret: packages_gpg_public_key
     GRAFANA_API_KEY:
       from_secret: grafana_api_key
   image: grafana/build-container:1.6.6
@@ -3675,11 +3675,11 @@ steps:
   - build-frontend-packages
   environment:
     GPG_KEY_PASSWORD:
-      from_secret: gpg_key_password
+      from_secret: packages_gpg_passphrase
     GPG_PRIV_KEY:
-      from_secret: gpg_priv_key
+      from_secret: packages_gpg_private_key
     GPG_PUB_KEY:
-      from_secret: gpg_pub_key
+      from_secret: packages_gpg_public_key
     GRAFANA_API_KEY:
       from_secret: grafana_api_key
   image: grafana/build-container:1.6.6
@@ -4727,11 +4727,11 @@ steps:
   - build-frontend-packages
   environment:
     GPG_KEY_PASSWORD:
-      from_secret: gpg_key_password
+      from_secret: packages_gpg_passphrase
     GPG_PRIV_KEY:
-      from_secret: gpg_priv_key
+      from_secret: packages_gpg_private_key
     GPG_PUB_KEY:
-      from_secret: gpg_pub_key
+      from_secret: packages_gpg_public_key
     GRAFANA_API_KEY:
       from_secret: grafana_api_key
   image: grafana/build-container:1.6.6
@@ -5341,11 +5341,11 @@ steps:
   - build-frontend-packages
   environment:
     GPG_KEY_PASSWORD:
-      from_secret: gpg_key_password
+      from_secret: packages_gpg_passphrase
     GPG_PRIV_KEY:
-      from_secret: gpg_priv_key
+      from_secret: packages_gpg_private_key
     GPG_PUB_KEY:
-      from_secret: gpg_pub_key
+      from_secret: packages_gpg_public_key
     GRAFANA_API_KEY:
       from_secret: grafana_api_key
   image: grafana/build-container:1.6.6
@@ -6061,11 +6061,11 @@ steps:
   - build-frontend-packages
   environment:
     GPG_KEY_PASSWORD:
-      from_secret: gpg_key_password
+      from_secret: packages_gpg_passphrase
     GPG_PRIV_KEY:
-      from_secret: gpg_priv_key
+      from_secret: packages_gpg_private_key
     GPG_PUB_KEY:
-      from_secret: gpg_pub_key
+      from_secret: packages_gpg_public_key
     GRAFANA_API_KEY:
       from_secret: grafana_api_key
   image: grafana/build-container:1.6.6
@@ -6439,6 +6439,6 @@ kind: secret
 name: aws_secret_access_key
 ---
 kind: signature
-hmac: 64942ed50326b912df092e639ce480eb1a0438947c7f3df4fbf126655e5e9c3e
+hmac: b00c47739d5af79f368c649765e1ac22d89ef4e4539166ad54650642ffc163e0
 
 ...

scripts/drone/steps/lib.star

@@ -644,9 +644,9 @@ def package_step(edition, ver_mode, variants=None):
         sign_args = ' --sign'
         env = {
             'GRAFANA_API_KEY': from_secret('grafana_api_key'),
-            'GPG_PRIV_KEY': from_secret('gpg_priv_key'),
-            'GPG_PUB_KEY': from_secret('gpg_pub_key'),
-            'GPG_KEY_PASSWORD': from_secret('gpg_key_password'),
+            'GPG_PRIV_KEY': from_secret('packages_gpg_private_key'),
+            'GPG_PUB_KEY': from_secret('packages_gpg_public_key'),
+            'GPG_KEY_PASSWORD': from_secret('packages_gpg_passphrase'),
         }
         test_args = ''
     else: